Installation for heating a fluid, preferably water, in a conventional central heating system, using the waste heat produced by a number of refrigerators

Patent · Tue Aug 16 04:00:00 EDT 1977

OSTI ID:6761970

Gaustafsson, B U

There is provided a heat pump installation for the heating of tap water and for room heating purposes, e.g., associated office spaces in large warehouses where a number of refrigerators are operating. The heat pump receives its input heat from the heat liberated by the refrigerators. In order to protect the refrigerators from the influence of the heat pump, and in order to accomplish a smooth operation of the heat pump, the installation according to this invention exhibits the features: that the evaporator device of the heat pump is arranged in the form of parallel-coupled evaporator units each of which is assigned an expansion valve controlled by the refrigerant pressure at the unit outlet; that a by-pass line containing a valve which opens when the outlet pressure reduces is arranged between the high-pressure side of the heat pump compressor and the refrigerant circuit of the heat pump, following the evaporator units; that another by-pass line with a valve controlled by the pressure or temperature at the inlet side of the compressor is arranged in parallel with the evaporator units of the heat pump; and that each evaporator unit of the heat pump is arranged in a heat-exchanging relationship with its particular first condensor unit in each condensor device of the refrigerators said condensor devices comprising in each case at least one additional condensor unit for the dissipation of the residual heat, for example to the outdoor air,a third by-pass line being arranged in parallel with the second condensor unit, and a control means being arranged to control the flow distribution between the condensor units as a function of the desired refrigerant pressure after the condensor device.

• Assignee: Projectus Industriprodukter AB
• Patent Number(s): US 4041724
• OSTI ID: 6761970
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320104* -- Energy Conservation
Consumption
& Utilization-- Commercial & Industrial Buildings-- (-1987)
APPLIANCES
BUILDINGS
COMMERCIAL BUILDINGS
DESIGN
ELECTRIC APPLIANCES
ENERGY
ENERGY CONSERVATION
ENERGY SOURCES
EQUIPMENT
HEAT
HEAT EXCHANGERS
HEAT PUMPS
HEAT RECOVERY EQUIPMENT
HEATERS
HEATING
HOT WATER
HYDROGEN COMPOUNDS
OXYGEN COMPOUNDS
REFRIGERATING MACHINERY
REFRIGERATORS
SPACE HEATING
WASTE HEAT
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION
WASTES
WATER
WATER HEATERS