Fire tube Boiler - Bosch Packaged Shell Boiler

Bosch Packaged Shell BoilerFor enhanced efficiency on a larger scale

Introduction to Bosch Thermotechnology

Bosch Thermotechnik GmbH is a leading supplier of resource-efficient heating products and hot water solutions in Europe. In fiscal 2013, the company generated sales of 3.1 billion Euros (68% outside Germany) and employed approximately 13,500 people. Bosch Thermotechnology has strong international and regional brands and manufactures a diversified product range in 21 plants in 11 European, North American and Asian countries. In 2013, Bosch Thermotechnology invested 129 million Euros in research and development. Intelligent networks and local systems for heating, ventilation, air-conditioning and electricity generation are fundamental technologies for the future building standard, which will generate more energy than is used.

As a pioneer enterprise in the global market, Bosch Thermotechnology provides boiler systems that are appropriate for use in various commercial and industrial applications. We have not only successfully provided high quality boiler system equipment and complete services to large and medium sized mining enterprises, we have also provided customized boiler system solutions to small enterprises, office buildings, and residential buildings.

In Southeast Asia, Bosch Thermotechnology has been established in the middle of 2011 to provide a closer support to its local customers as well as to further extend its market position. The regional headquarter office is based in Singapore, overseeing business development in the Southeast Asia region. Nowadays, Bosch Thermotechnology has successfully established its sales offices in Indonesia, Malaysia, Philippines, Singapore, Thailand, and Vietnam, with a representative office in Myanmar.

2 | WNS-Bosch Packaged Shell Boiler

National A grade boiler manufacturing license

Pressure vessel D1 and D2 grade manufacturing license

ASME certification

Pressure vessel D2 grade design license

Boiler grade I installation, alteration, and

maintenance license

WNS-Bosch Packaged Shell Boiler | 3

WNS Series Fully Automatic Fuel Gas Boiler

WNS series oil and gas boilers are horizontal internal combustion three pass complete wet back fire-tube boilers, a proprietary high tech product developed by our company based on imported technology, as an integration of electronics, combustion and heat exchange.

The fire tube boiler system uses German Bosch industrial boiler safety control system technology including PLC with independent interlocking protection system. The touch screen ensures a secure and reliable automatic boiler control and operation.

Safer

More energy efficient

More environmentally

friendly

Smarter

Aesthetically more

appealing

Bosch WNS Model Fully Automatic Fuel Gas Boiler

Main Boiler Structural Features

Safe and ReliableMain boiler utilizes an all wet back structure. As the shell diameter is relatively large, the boiler water volume is higher, with good safety characteristicsThe boiler model is especially well suited to positive pressure operation and has good blast resistance and excellent insulationUnique design with double inner and outer doors for the front and rear smokebox structure, which is highly ingenious in separating the functions for heat resistance and heat insulation. Stainless steel serves as lining in the front smokebox, completely eliminating the possibility of heat resistant materials peeling offAdvanced and complete independent safety control technology and high quality components ensure safe and reliable boiler operation

Clean and Environmentally Friendly, High Efficiency and Conserving Energy

Boiler uses insulating protective materials, with good heat insulation effectiveness. Surface temperature is only higher

than room temperature by 5°C, limiting heat loss, while also cutting off the noise generated inside the boiler by combustion

Utilizes an internationally renowned imported fully automatic burner, achieving highly efficient boiler combustion,

conserving fuel and reducing emissions of pollution, noise and waste gas.

Uses high efficiency heat transfer corrugated tube components, that increase heat transfer with significant energy

conservation

Uses natural circulation method resulting in low power loss and a relatively simple boiler system

Energy conservation device is configured at the back and can further boost boiler thermal efficiency by 3%~7%

Compact Structure, Easy Maintenance

Uses integrated fast-assembly design

Uses high efficiency heat transfer corrugated tube components with very good thermal expansion characteristics, which can

prevent deformation of heating surface. Corrugated tube heat transmission coefficient is far higher than that of flat tubes

with the same heating surface, thereby reducing boiler volume.

Burner and tube instruments are integrated, saving on boiler room occupied area as well as lowering installation costs and

infrastructure investment.

Easy to maintain: Only need to open the front and rear smokebox doors for maintenance

Advanced Fully Automatic Intelligent Control System

Uses internationally leading control technology, ensuring a high reliability control system

Advanced mechanical and electrical integration, fully automatic boiler control technology

Programmable logic control (PLC) technology

Cascading control or centralized control technology

Uses anti-interference, long life-span, high reliability imported control components

The entire process uses 3 level boiler water level controls

Periodic self-diagnostics on steam pressure controller according to EU standards


Three pass wet back model corrugated


Ensuring High Safety and High Reliability for the Boiler

Imported Bosch Germany advanced industrial boiler independent safety control system and combustion system,

incorporating boiler water level, steam pressure and temperature malfunction protection functions

uses independent interlocking protection system design. Even if PLC is disabled due to malfunction and/or is

unattended, the independent safety control system still ensures high safety and high reliability of the boiler

Uses German TÜV, CE certified advanced boiler water level safety regulator with self-monitoring capability

Uses German TÜV, CE certified protection level IP65 steam pressure controller

After a malfunction occurs, and before the malfunction is corrected, software and hardware will take simultaneously

action, thereby completely eliminating the possibility of human operator error or short-cuts to operational procedures

Burner fuel gas valve leak automatic detection, furnace pre-ventilation prior to ignition, automatic ignition, flue automatic

monitoring, combustion malfunction alarm and furnace ventilation after machine is stopped

Automatic control of three feed water sources and automatic control of boiler load, ensuring long-term stable output of

high quality steam

Automatic detection, control and protection of temperature, pressure, water level, flow rate, and oxygen content

Pre-configuration of boiler start and stop times

Achieve Genuinely Fully Automatic Operations

Smart, intuitive, and simple human-machine operating interface

Malfunctions and Historical Record

Touch screens as the human-machine interface for the boiler

Menu display makes boiler control simple, systematic and intelligent

Touch screens can display boiler water level, pressure, temperature, combustion intensity, fan, and water pump

operating status dynamically and in real time, so boiler operating status can be taken in at a glance

Each operating parameter can be freely set as needed on the touch screen

Multi-window display and abundant online help functionality in the operating process reminds operators of how to

execute the next step

Automatic recording of malfunction time and cause

Cumulative record of total ignition times, operating time of fan, water pump and burner

Automatic rendering of pressure, temperature, and other parameters

Automatic recording of hot water/steam usage amount, providing a statistical basis for energy resource management

Fuel gas boiler control system interface

Description:

Products labeled are primary recommendations; products labeled are secondary recommendations; according to client specific

needs, products for other parameters can be provided.

Steam boiler designed efficiency range, dependent on configuration of energy saving device, is: 90.5%~101.2%.

Hot water boiler designed efficiency range, dependent on configuration of energy saving device, is: 90.8%~95%.

Steam boilers are all configured with an energy saving device, in one of three models: B type (basic model) , E type(economic model),

S type (strong model) , with respective flue gas temperatures of 150°C, 90°C, and 55°C.

Hot water boiler energy saving devices fall into two categories: No boiler energy saving device, with corresponding flue gas

temperature of150°C;configured with boiler energy saving device, with corresponding flue gas temperature of 100°C.

Boiler designed fuel includes: natural gas, town gas, liquefied petroleum gas, biogas, coke oven gas, mine gas, light oil, and heavy oil.

WNS series boiler body is designed for using fuel oil and gas dual use, fuel oil, or fuel gas as the three kinds of fuel, customer specifies

the relevant fuel when ordering, to facilitate selection of appropriate burners and other auxiliary equipment.

WNS Oil and Gas Hot Water Boiler Product Range Offerings

Nominal water outlet pressure(gauge pressure)MPa 0.7 1.0 1.25 1.0 1.25 1.25

Nominal water outlet temperature/water inlet temperature/°C 95/70 95/70 95/70 115/70 115/70 130/70

Nominal thermal power MW

0.7

1.4

2.1

2.8

4.2

5.6

7.0

10.5

14


WNS Oil and Gas Steam Boiler Product Range Offerings

Rated Steam Pressure (MPa) 1.0 1.25 1.6

Rated Steam Capacity [t/h] Saturation Saturation Saturation

1

2

4

6

8

10

15

20

1

3

2

4

5

6

7

Other capacities and pressures can be supplied on demand.

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ModelWNS0.5-1.0-QY

WNS1-1.0-QY

WNS2-1.25-QY

WNS3-1.25-QY

WNS4-1.25-QY

Nominal steam volume [t/h] 0.5 1 2 3 4

Nominal steam pressure [MPa] 1.0 1.0 1.25 1.25 1.25

Nominal steam temperature/ [°C] 184 184 193 193 193

Feed water temperature [°C] 20 20 20 20 20

Boiler designed thermal efficiency [%]

Standard fuel

Means of combustion

Flue gas temperature [°C] 55 55 55 55 55

Fuel consumption(natural gas) [Nm3/h] 38 76 151 227 302

Gas supply pressure(natural gas) [kPa] 10~30 10~30 10~30 10~30 10~30

Fuel oil consumption [kg/h] 33 64 128 191 254

Power [V/HZ] 380/50

Equipment total power [kw] 2.5 4.2 7.5/9 13.5/15 13.5/15

Main unit weight [t] 3.1 4.9 7.2 9.8 12.7

Main unit external dimensions [m] 2.6x1.37

x1.68

3.408x1.68

x1.98

3.88x1.83

x2.17

4.61x2.02

x2.41

5.04x2.24

x2.64

Appropriate sea level elevation [m] ≤800

Main steam valve diameter [mm] DN50 DN65 DN80 DN100 DN100

Safety valve diameter [mm] DN40 DN40 DN50 2xDN40 2xDN50

Feed water pipe diameter [mm] DN25 DN32 DN32 DN32 DN40

Waste water pipe diameter [mm] DN40 DN40 DN40 DN40 DN40

Stack diameter [mm] Φ219 Φ300 Φ350 Φ400 Φ500

Description:

Boiler uses natural gas and light oil as the main designed fuel, while also appropriate for using town gas, liquefied petroleum gas,

biogas, coke oven gas, and mine gas. When designed fuel is heavy oil, the designed boiler will be correspondingly bigger.

Standard calculation of fuel consumption is based on natural gas lower heat value 36006KJ/Nm3 and light oil lower heat value

42705kJ/kg.

Steam boiler flue gas temperature and fuel consumption in the table are calculated based on a S type steam boiler energy saving

device.

Equipment total power shown in the table is based on fuel being natural gas/light oil, inclusive of blower, oil pump (light oil), and

electronic equipment power.

WNS system main boiler is appropriate for fuel oil and gas dual use, fuel oil, or fuel gas as the three kinds of designed fuel.

We believe in continuous improvement of product characteristics, new generation product data may differ, parameters shown in the

table are for reference only.

1

2

3

4

5

6

Natural gas/light oil

Forced ventilation, micro positive pressure combustion

Typical WNS Series Oil and Gas Steam Boiler Technical Parameters Table

90.5-100.3

Description:

Boiler uses natural gas and light oil as the main designed fuel, and is also appropriate for using town gas, liquefied petroleum gas,



42705kJ/kg.

Steam boiler flue gas temperature and fuel consumption in the table are calculated based on an S type steam boiler energy saving

device.

Equipment total power shown in the table is based on fuel being natural gas/light oil, and is inclusive of blower, oil pump (light oil),

and electronic equipment power.

WNS system main boiler is appropriate for fuel oil and gas dual use, fuel oil or fuel gas as the three kinds of designed fuel.

We believe in continuous improvement of product characteristics, thus new generation product data may differ. Parameters shown

in the table are for reference only.

1

2

3

4

5

6

ModelWNS6-1.25-

QYWNS8-1.25-

QYWNS10-1.25-

QYWNS15-1.25-

QYWNS20-1.25-

QY

Nominal steam volume [t/h] 6 8 10 15 20

Nominal steam pressure [MPa] 1.25 1.25 1.25 1.25 1.25

Nominal steam temperature/[°C] 193 193 193 193 193

Feed water temperature [°C] 20 20 105 105 105


Standard fuel

Means of combustion

Flue gas temperature [°C] 55 55 55 55 55

Fuel consumption(natural gas) [Nm3/h] 451 600 649 971 1295

Gas supply pressure(natural gas) [kPa] 10~30 10~30 10~30 30~50 30~50

Fuel oil consumption [kg/h] 380 506 547 819 1092

Power [V/HZ] 380/50

Equipment total power [kw] 19/20.5 30/34 33.5/37.5 61/65 74.5/78.5

Main unit weight [t] 17.8 21.7 27.8 40.3 51.8

Main unit external dimensions [m] 5.61x2.44

x2.88

6.64x2.59

x3.05

7.04x2.74

x3.2

8.39x3.14

x3.57

9.43x3.34

x3.61


Main steam valve diameter [mm] DN125 DN150 DN150 DN200 DN200

Safety valve diameter [mm] DN80/DN50 2×DN80 2×DN80 DN80/DN100 2×DN100

Feed water pipe diameter [mm] DN40 DN50 DN50 DN80 DN80

Waste water pipe diameter [mm] DN40 2×DN40 2×DN40 2×DN40 2×DN40

Stack diameter [mm] Φ600 Φ700 Φ800 Φ800 Φ1000


Typical WNS Series Oil and Gas Steam Boiler Technical Parameters Table



91.8-101.2


ModelWNS0.7-1.0/95/70-QY

WNS1.4-1.0/95/70-QY

WNS2.1-1.0/95/70-QY

WNS2.8-1.0/95/70-QY

WNS4.2-1.0/115/70-QY

WNS5.6-1.0/115/70-QY

WNS7.0-1.25/115/70-QY

WNS10.5-1.25/115/70-QY

WNS14-1.25/115/70-QY

Nominal thermal power [MW] 0.7 1.4 2.1 2.8 4.2 5.6 7.0 10.5 14

Nominal steam pressure [MPa] 1.0 1.0 1.0 1.0 1.0 1.0 1.25 1.25 1.25

Nominal water outlet temperature/[°C] 95 95 95 95 115 115 115 115 115

Nominal water inlet temperature/[°C] 70 70 70 70 70 70 70 70 70


Standard fuel

Means of combustion

Flue gas temperature [°C] 100 100 100 100 100 100 100 100 100

Fuel consumption(natural gas) [Nm3/h] 75 150 224 299 446 592 740 1108 1477

Gas supply pressure (natural gas) [kPa] 10~30 10~30 10~30 10~30 10~30 10~30 10~30 30~50 30~50

Fuel oil consumption [kg/h] 64 127 189 252 376 500 623 934 1245

Power [V/HZ] 380/50

Equipment total power [kw] 1.7 4.5/6 9.5/11 9.5/11 11.5/13 22.5/26.5 22.5/26.5 46/51 56/60

Main unit weight [t] 5.2 6.7 8.2 10.0 13.3 17.7 21.3 39.4 53.0

Main unit external dimensions [m]

3.33

x1.55

x1.89

3.86

x1.65

x1.99

4.32

x1.85

x2.19

4.72

x2.05

x2.41

5.47

x2.25

x2.65

5.97

x2.45

x2.85

6.8

x2.59

x2.97

7.92

x3.0

x3.46

9.56

x3.35

x3.59

Circulating water volume [t/h] 24 48 72 96 80 107 133 200 266


Outlet/inlet water pipe diameter [mm] DN80 DN100 DN125 DN150 DN150 DN150 DN200 DN200 DN250

Safety valve diameter [mm] DN32 DN50 2xDN50 2xDN50 2xDN80 2xDN100

2xDN80

(FP)

2xDN100

(FP)

2xDN100

(FP)

Waste water pipe diameter [mm] DN40 DN40 DN40 DN40 2xDN40 2xDN40 2xDN40 2xDN40 2xDN40

Stack diameter [mm] Φ300 Φ350 Φ350 Φ500 Φ600 Φ700 Φ800 Φ800 Φ1000

Description:

Boiler uses natural gas and light oil as the main designed fuel, and is also appropriate for using town gas, liquefied petroleum gas,



42705kJ/kg.

Hot water boiler flue gas temperature and fuel consumption in the table are calculated based on the corresponding type of boiler

energy saving device.

Equipment total power shown in the table corresponding to fuel being natural gas/light oil, inclusive of blower, oil pump (light oil),

and electronic equipment power.

WNS system main boiler is appropriate for fuel oil and gas dual use, fuel oil or fuel gas as the three kinds of designed fuel.

We believe in continuous improvement of product characteristics, thus new generation product data may differ. Parameters shown in

the table are for reference only.

1

2

3

4

5


90.8-95


Typical WNS Series Oil and Gas Steam Boiler Technical Parameters Table Typical WNS Series Fuel Gas Hot Water Boiler Technical Parameters Table

6

The flue gas exit temperature of the boiler is relatively high and can be recovered via energy saving device which can pre-heat boiler feed water while simultaneously lowering flue gas temperature, reducing boiler flue gas emission heat loss, increasing boiler thermal efficiency by 3%~7% and achieving the goals of energy savings, emission reduction, and loss prevention.

Standard configurations for Bosch’s boilers include B type (basic model) boiler energy saving device, with options available for E type (economic model) and S type (enhanced model) energy saving devices, the corresponding flue gas temperatures are 150°C, 90°C, and 55°C, respectively.

For hot water boilers, the standard configuration falls into two categories: no boiler energy saving device corresponding to flue gas temperature of 150°C, and with energy saving device corresponding to flue gas temperature of 100°C.

Besides the boiler energy saving devices shown above, our company can also specifically design more appropriate, higher efficiency boiler energy saving devices based on user fuel characteristics and user specific requirements.


Energy Saving Device Overview

Energy Saving Device Features

Advanced heat transfer technology——high quality heat exchange components, highly efficient heat transfer coefficient Reliable anti-corrosion measures——control dew point temperature, use of corrosion resistant alloy materials High efficiency residual heat reclamation——significantly reduces boiler flue gas temperature Significant energy saving gains——saves fuel consumption, lowers operating costs

For steam boilers and hot water boilers configured with various standard energy saving device types, changes in the corresponding flue temperature and boiler thermal efficiency according to boiler load are shown as in the figure below:

No energy saving device flue gas temperatureB type energy saving device flue gas temperatureE type energy saving device flue gas temperatureS type energy saving device flue gas temperatureNo energy saving device boiler efficiencyB type energy saving device boiler efficiencyE type energy saving device boiler efficiencyS type energy saving device boiler efficiency

Line descriptions:

Figure notes:

Figure uses WNS10-1.25-QY boiler for example calculation

No energy saving device boiler efficiencyWith energy saving device boiler efficiencyNo energy saving device flue gas temperatureWith energy saving device flue gas temperature

Line descriptions:

Figure notes:

Figure uses WNS7-1.25/115/70-QYboiler for example calculation

effic

ienc

y % 0

20

40

60

80

100

120

140

160

180

200

220

240

260

280

300

104

102

100

98

96

94

92

90

88

8630 40 50 60 70 80 90 100 110

Boiler load %

98

96

94

92

90

88

86

Boi

ler

effic

ienc

y % 0

20

40

60

80

100

120

140

160

180

200

30 40 50 60 70 80 90 100 110Boiler load %


Always Standing-by: First Rate Service

Thanks to our carefully cultivated regional service network, we can guarantee the fastest possible reaction times. Besides

maintenance service, service breakdown and repair, we also provide regular inspection support for systems. Should you

be uncertain about whether or not your system is still at the cutting edge and whether or not it is still operating at high

efficiency, we are also very happy to assist you. We will analyze your system, and if necessary, can also upgrade it.

During normal working hours, you can contact local customer service engineers directly with the specific contact

information available on the cover of the switch cabinet of your boiler system. We are committed to providing service

to individual clients, and contacting the local customer service engineer directly can save you a significant amount of

valuable time.

We will provide professional, reasonable suggestions over the phone in response to your questions or arrange for

customer service engineers to analyze the problem, thereby creating an optimal solution.

To obtain more information, please inquire through www.bosch-industrial.com; www.bosch-industrial-asean.com (from

July 2014)

Service Motivates Action

Service breakdown mean high costs. Do you need fast, professional assistance when they occur? When upgrading

existing systems, do you need support? Bosch Thermotechnology will always be standing by to provide you with highly

efficient, safe and professional first class service.

Bosch Thermotechnology in Southeast Asia

Singapore, Cambodia, Lao PDR, MyanmarRobert Bosch (SEA) Pte. Ltd.Thermotechnology Division11 Bishan Street 21, #04-05Singapore 573943Tel +65 6258 5511 Fax +65 6571 2970Email: [email protected]

Indonesia (Jakarta): Indonesia (Surabaya) PT. Robert Bosch PT. Robert BoschArkadia Office Park Tower F Plaza BRI, Suite 1203 7th Floor, Suite 703-705 Jl. Jend. Basuki Rahmat No. 122Jl. TB. Simatupang Kav.88, Surabaya 60271Jakarta 12520 IndonesiaIndonesia Tel: + 62 31 5356262Tel: +62 21 3005 5800 Fax : +62 31 5356266Fax: +62 213005 5801 Email: [email protected]: [email protected] Malaysia:Robert Bosch Sdn. BhdThermotechnology DivisionNo. 8A, Jalan 13/6,46200 Petaling Jaya, Selangor,MalaysiaTel. + 60 (3) 7966 3000Fax + 60 (3) 7958 8833Email: [email protected]

Myanmar:Representative Office of Robert Bosch (SEA) Pte. Ltd.Thermotechnology DivisionNo. 60B, Kabar Ayer Pagoda RoadMayangone TownshipYangon, MyanmarTel. + 95 1 663616Fax + 95 1 663616Email: [email protected]

Philippines:Robert Bosch Inc.Thermotechnology Division28 Floor, Fort Legend Tower3rd Ave. Cor 31st StFort Bonifacio Global CityMetro Manila 1634PhilippinesTel. +63 2 870 3888 Fax +63 2 870 3830 Email: [email protected]

Thailand:Robert Bosch LimitedThermotechnology Division287 Liberty Square Building, 11th floorSilom Road, BangrakBangkok 10500ThailandTel. + 66 2 639 3111Fax + 66 2 238 4783Email: [email protected]

Vietnam (Ho Chi Minh): Vietnam (Hanoi): Robert Bosch Vietnam Co., Ltd. Robert Bosch Vietnam Co., Ltd.Thermotechnology Division Thermotechnology Division194 Golden Building Unit 03C, 2nd floor, International Center473 Dien Bien Phu str. – W.25 – 17 Ngo Quyen St., Hoan Kiem Dist.,Binh Thanh Dist. - Ho Chi Minh City Ha NoiVietnam VietnamTel +84 (8) 6258 3690 Tel +84 (4) 3939 3119Fax +84 (8) 6258 3692 Fax +84 (4) 3936 2899Email: [email protected] Email: [email protected] For more information:www.bosch-industrial.comwww.bosch-industrial-asean.com (from July 2014)

Fire tube Boiler - Bosch Packaged Shell Boiler

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