Hi. Seems like dedicated to #12...
In summer heat, the compressor liquifies the refrigerant, it is cooled to outside ambient and evaporated inside the dwelling to absorb heat.
In winter, the refrigerant flow is reversed by an electrovalve and the compressor liquifies the refrigerant and heats it up, with its heat being released inside the dwelling. The warm gas that delivered heat inside goes back to the compressor outside and is compressed/heated again...
About efficiency; how can these systems be claimed as more efficient in winter; if a kilowatt is a kilowatt. The energy of the compressor, fan, remnant heat in coils/pipes is vented outside in the cold warming the ambient; say those items dissipate 1 KW. Instead, a 1 KW electric heating element inside would not waste anything outside.
Is this 'heat pump in winter' a good efficient idea?
Shouldn't the liquid refrigerant pipe running bare by a crawling space be insulated in winter ?
In summer heat, the compressor liquifies the refrigerant, it is cooled to outside ambient and evaporated inside the dwelling to absorb heat.
In winter, the refrigerant flow is reversed by an electrovalve and the compressor liquifies the refrigerant and heats it up, with its heat being released inside the dwelling. The warm gas that delivered heat inside goes back to the compressor outside and is compressed/heated again...
About efficiency; how can these systems be claimed as more efficient in winter; if a kilowatt is a kilowatt. The energy of the compressor, fan, remnant heat in coils/pipes is vented outside in the cold warming the ambient; say those items dissipate 1 KW. Instead, a 1 KW electric heating element inside would not waste anything outside.
Is this 'heat pump in winter' a good efficient idea?
Shouldn't the liquid refrigerant pipe running bare by a crawling space be insulated in winter ?