HISEER AS10/LF, Руководство по эксплуатации, установке и обслуживанию

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1
Working principle
1. The low pressure and low temperature liquid
refrigerant coming out of expansion valve exacts
heat energy from the air through finned coil heat
exchanger
①
and evaporates into gas state.
2. The gas state refrigerant is sucked into compressor
②
and compressed to high pressure and high temp.
gas .
3. The high pressure and high temp. gas discharged by
compressor releases its heat energy to water in plate
exchanger
③
and condensed to liquid state.
4. The liquid state refrigerant is expanded in
thermostatic expansion valve
④
and become low
pressure and low temperature liquid refrigerant.
5. The cycle repeats.
6. When EVI condition is met, EVI expansion valve
⑥
will open and some liquid gas will expand
and the gas will be inject into compressor middle
containment after absorbing heat from main branch
liquid gas in the economizer
⑤
. With this EVI
function, not only heat pump heating capacity and
COP will increase ,but also compressor discharge
temp. could be controlled within safety limit and
the heat pump workable ambient temp. could be
extended to -25
℃。
F
Outdoor unit
Indoor unit
①
④
②
③
⑤
⑥
Buffer tank
RT