This report describes the field trial undertaken at a Manchester clothing store with a gross floor area of 5950 m2, served by eight rooftop air to air heat pumps. The heat pumps have a design heat output of 61 kW each, and the data complements that which has been derived from earlier trials with smaller units. A description is given of the store and its services, with the instrumentation installed. Detailed instrumentation was applied to one representative floor, and the overall pattern for the store derived using this data and the known total loads and operating hours.
This article describes the integration of a gas engine-driven heat pump system in the air conditioning and heating system of the World Trade Center premises in Amsterdam. The heat pump provides for both cooling and heating during the summer and winter periods and also provides emergency power in the case of interrupted public power supply.
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