Utilizing Heat Pumps for Simultaneous Heating and Cooling Applications

Рет қаралды 21,090

Johnson Controls

Күн бұрын

Пікірлер: 8

@benibensa 6 жыл бұрын

Thanks, though little tippo at 2:50 : COP = (1,35 + 1) / 0,35

@tominfanger7 2 жыл бұрын

I've been wondering if using two heat pumps working opposite each other could warm water in a swimming pool and freeze water for an ice rink located adjacent to each other. The theory seems sound but I'm not an engineer so there might be something I'm missing.

@thimmukar8565 2 жыл бұрын

In theory yes, but processes are not reversible so won't happen.

@tominfanger7 2 жыл бұрын

@@thimmukar8565 This thought was based on using two (2) heat pump systems. One would be set to heat and the other to cool. Nothing is being reversed in this situation. Each pump is set to do one process and one process only. You are removing heat from one end of the circuit - the ice rink - and placing it at the other end - the swimming pool. The other system is removing cold from the swimming pool side of the circuit and depositing it at the ice rink side. What is being reversed?

@SVC-hz6dq Жыл бұрын

You most certainly can. However... you will need a chiller (i.e. heat pump) that takes up a high lift, which is the differential pressure of the refrigerant in its low temperature stage to its high temperature stage. With conventional refrigerants that can be either a chiller with screw compressor technology or if the compressor is centrifugal it has to be multistage. Alternatively a chiller with ammonia will do.

@irrelevantfish1978 5 жыл бұрын

Perhaps I'm misunderstanding or overlooking something obvious, but why not use exterior heat exchange (eg, cooling towers, geothermal loops) to compensate for unbalanced heating/cooling loads instead of adding supplemental boilers/chillers? While that would require more heat pump capacity in addition to the heat exchange system, it seems like that would ultimately be more economically/energetically efficient in most cases, particularly in more temperate climates and if imbalances in both directions are expected.