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Schmidt Hartman Boiler

This document summarizes the workings and advantages of a Schmidt Hartmann boiler. The boiler uses two pressure circuits to indirectly exchange heat, with high pressure steam passing through a submerged coil in the evaporator drum to produce steam. It can generate steam at 500 N/cm2 while achieving a high heat transfer rate. Condensate from the primary circuit heats feed water. Distilled water is used in the primary circuit to prevent overheating or salt deposition. This design allows for wide load fluctuations without pressure changes and avoids priming during evaporation.

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Dr. BIBIN CHIDAMBARANATHAN
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661 views7 pages

Schmidt Hartman Boiler

This document summarizes the workings and advantages of a Schmidt Hartmann boiler. The boiler uses two pressure circuits to indirectly exchange heat, with high pressure steam passing through a submerged coil in the evaporator drum to produce steam. It can generate steam at 500 N/cm2 while achieving a high heat transfer rate. Condensate from the primary circuit heats feed water. Distilled water is used in the primary circuit to prevent overheating or salt deposition. This design allows for wide load fluctuations without pressure changes and avoids priming during evaporation.

Uploaded by

Dr. BIBIN CHIDAMBARANATHAN
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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SCHMIDT HARTMANN BOILER

BIBIN CHIDAMBARANATHAN
SCHMIDT HARTMANN BOILER
Working:
❖ This boiler is high pressure indirectly heated boiler.

❖ There are two pressure circuits used to exchange

energy.

❖ In the primary circuit, steam is passed through

submerged heating coil, located in the evaporator

drum.
SCHMIDT HARTMANN BOILER
Working:
❖ The high pressure steam of primary circuit

possesses sufficient thermal head to produce steam at

500 N/cm2 with a heat transfer rate of 2000 W/m2

hr°C.

❖ This main steam is passed through a superheater

placed in the uptake and then to the application point.


SCHMIDT HARTMANN BOILER
Working:
❖ The condensate of high pressure primary circuit steam

is circulated through the water drum where feed water is

heated to its saturation temperature.

❖ In the primary circuit, natural circulation is used.

❖ For purpose of safety a combined pressure gauge and

thermometer are fitted to the primary circuit. There is an

arrangement is provided for making distilled water for the

primary circuit.
SCHMIDT HARTMANN BOILER
Advantages:
❖ Since if use distilled water in primary circuit, there

are less chances of overheating or burning of the

highly heated components as there is no danger of salt

deposition.

❖ There is no chance of interruption to the circulation

either by rust or other material, due to use of distilled

water in the primary circuit.


SCHMIDT HARTMANN BOILER
Advantages:
❖ The feed water outside the heating coil and hence it is

easy to remove salt deposits.

❖ Due to high thermal and water capacity, wide,

fluctuations of load are allowed without undue priming or

abnormal increase in the primary pressure.

❖ The absence of water risers in the drum, and the

moderate temperature difference across the heating coil,

allows evaporation to proceed without priming.


Thank You

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