Manual Heat Pump Model HHPM-V.2- SEP 2012
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2. GENERAL
2.1. Applications
Heat pump can be successfully applied where large amounts of hot water is needed such as
hotels, hospital, massage ,and also in the industry. The best suitable application is for supplying hot water
in commercial facilities where demands for hot water and space cooling are concurrent.
Energy Master Co.,Ltd. can supply heat pump for each specific application. Two basic types of
applications are as follows :
1.
Hot Water Heating Only. This applications, ie. Resorts, Apartments, Condominiums, hot water
is made while the cold side is not used because of building layout and other reasons. The hot
water systems are simple to design and control, and even no cooled air effect will be taken as
added savings in the economic payback analysis, the heating efficiency of the heat pump still
pay back.
2.
Hot Water Heating with cooled air Benefit
.
This application, such as Restaurants, Nursing
Homes. Laundries, Hospitals. Kitchens, Food Processing Plants, Photographic Processing
Plants, etc., the cool air produced by the heat pump is used to cool an occupied space while
energy efficient hot water is being made. When the cooled air by-product is used, the
calculation of both the hot water and cooled air loads is very important. The profiles of both
loads thoughout the day shall be calculated. There are two possible cases when using the
cooled air :
a) The Hot Water Load exceeds the Cooled Air Load Heat Pump shall be sized for the
cooled air load and collect hot water in a hot water storage tank to feed the main water hot
water system. Use a room thermostat in series with the hot water storage tank aquastat to
control the Heat Pump to conrol the space temperature.
b) The Cooled Air Load exceeds the Hot Water Load. Heat Pump can be sized by two
strategies.
Strategy 1.) Size the Heat Pump for the Hot Water Load and assist the cooled air
system by used the cool air for spot cooling, or
Strategy 2.) Size the Heat Pump to match the cooled air load and incorporate the
Remote Heat Rejection option such as cooling tower. In both of these cases the hot water is
typically stored in a hot water storage tank.
2.2 Operating limits
The air source heat pump capacity is affected by the temperature of the entering air. As entering
