MACAO（SOFIT Hotel）

Location：MACAO（SOFIT Hotel）

Units：LYDS-160ZW（CO2 water source heat pump）

Function：2 pcs，Gas boiler replacement, offering hot water and 7C cooling water for central air condition. Saving lots of daily cost

Ambient：winter min 10℃，summer max 38℃

Requirement：The hotel use gas boiler to offering DHW before, but now need to use a more efficiency and green heat pump. Normal temperature of the DHW is 55℃, but they need to heat up to 70℃ for a few hours during every 7 days to kill the baterial inside the water system,make it clean and healthy。The boiler room has limit space only 6 SQM available for the heat pump.Thanks to the compact design of Co2 heat pump, system well fits.

Analysis：The old gas boiler heat up the potable wate through a second loop. and the hotel has 480 customer rooms, and require 120 ton hot water every day.They also have a gambling hall requires air conditioning 24HX7 supplied by central water chiller.

Solution：2pcs 160KW water to water co2 heat pump, with double wall HX, directly supply DHW to thermal storage tank for rooms, meanwhile supply 7℃ free chilled water to the central air conditioner.

After one year operation, the hotel manager confirmed using the CO2 heat pump can save 3580￥ per day, and the investment return within half a year. Also they do not need specilist to operat the heat pump, save cost and more safer than gas boiler