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Commercial Plantroom heating or cooling Commercial plant is supplied in modules which are linked together. They do not come with integral water pumps, these are generally sized by the M and E consultant. The modules can be set for either heating or cooling (if specified as a reverse cycle module) and the schematic above can be used for both modes of operation. Heating and cooling together cannot be achieved using the system design as above. The effectiveness of the cooling (and heating) will depend on the heat distribution system and generally for cooling Air Handling Units are used. In commercial applications buffer tanks are sometimes required, due to the large variation of loads and turndown issues. In this case Kensa would generally recommend a two connection buffer tank installed in the heat pump return, after the low loss header. This will allow the required flow rate to be maintained through the heat pump and keep a sufficient volume of water 'in circuit' to prevent short cycling. This enables the heat pump to cope with low load conditions, while not introducing any inefficiency associated with indirect buffer tanks.
Click on the drawing for a larger and more detailed application sheet. Commercial Plantroom heating and cooling Commercial plant is supplied in modules which are linked together. They do not come with integral water pumps , these are generally sized by the M and E consultant. The modules can be set for either heating or cooling (if specified as a reverse cycle module) and the schematic above can be used if heating and cooling is required at the same time. By using diverting valves, a single module (or more) can provide cooling, while the other units provide heating. The effectiveness of the cooling (and heating) will depend on the heat distribution system and generally for cooling Air Handling Units are used. In commercial applications buffer tanks are sometimes required, due to the large variation of loads and turndown issues. In this case Kensa would generally recommend a two connection buffer tank installed in the heat pump return, after the low loss header. This will allow the required flow rate to be maintained through the heat pump and keep a sufficient volume of water 'in circuit' to prevent short cycling. This will enable the heat pump to cope with low load conditions, while not introducing any inefficiency associated with indirect buffer tanks.
Click on the drawing for a larger and more detailed application sheet. For other configurations or further details please contact Kensa Technical Department. |
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