| 摘要 |
A room which is substantially sealed or sealable from the surrounding atmosphere is conditioned by a plant which has a fluid heating or cooling unit, one or more heat exchangers, conduits which connect the unit with the heat exchanger(s), and a computer which is connected with sensors serving to transmit signals denoting the temperature tV of fluid in the conduit or conduits leading from the unit to the heat exchanger(s), the temperature tR of fluid in the conduit or conduits leading from the heat exchanger(s) to the unit, and the rate m of fluid flow in the conduit or conduits. These signals are used to calculate a so-called load range prevailing in the room in accordance with the equation (tV-tR)xm. The calculated load range is compared with the load ranges of a pattern of load ranges which are characteristic of the plant, and the computer adjusts the unit or a mixing valve in the conduit or conduits leading to the heat exchangers(s) in order to change the value of tV so that the selected value of tV conforms to that which was used to calculate the equivalent load range of the pattern.
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