초록 ▼

A control arrangement particularly useful in solar heat collecting systems utilizing a heat transfer medium which is heated during circulation through first and second solar collectors and emitted to a receiver. The first and second solar collectors, including absorber plates to be heated by the sun

A control arrangement particularly useful in solar heat collecting systems utilizing a heat transfer medium which is heated during circulation through first and second solar collectors and emitted to a receiver. The first and second solar collectors, including absorber plates to be heated by the sun, are disposed in generally planor relation. The control arrangement compares a first signal responsive to the temperature of the first solar collector absorber plate with a second signal responsive to a selected reference temperature and provides an output signal to control means which operate valve means to control flow of the heat transfer fluid to the first and second solar collectors. The control means directs the heat transfer fluid from the outlet of the first solar collector to the receiver when the first signal and second signal are in a first relationship and directs the fluid from the outlet of the second solar collector and from the outlet of the first solar collector and from the outlet of the second solar collector to the receiver when the first signal and the second signal are in a second relationship. In another feature means are provided to control rate of flow of the heat transfer fluid through the first and second solar collectors in response to selected relationship between the first signal and the second signal.

대표청구항 ▼

A control arrangement for a heat transfer system including a heat transfer fluid, first and second heat sources of generally equal temperature where said first heat source includes first heat transfer conduit means having a heat transfer fluid first inlet and a heat transfer fluid first outlet where

A control arrangement for a heat transfer system including a heat transfer fluid, first and second heat sources of generally equal temperature where said first heat source includes first heat transfer conduit means having a heat transfer fluid first inlet and a heat transfer fluid first outlet where heat is transfered from said first heat source to heat transfer fluid flowing in said first heat transfer conduit; said second heat source includes second heat transfer conduit means with heat transfer second fluid inlet means and heat transfer second fluid outlet means for emission of heat transfer fluid from said second heat transfer conduit where heat is transfered from said second heat source to said heat transfer fluid in said first heat transfer conduit, conduit bypass means connecting said heat transfer fluid first outlet to said heat transfer fluid second inlet, heat transfer fluid supply means to selectively supply heat transfer fluid to at least one of said first and second fluid inlets, valve means operable between first mode to supply heat transfer fluid to said first heat source heat transfer fluid first inlet means and said second heat source heat transfer fluid second inlet means and second mode to supply heat transfer fluid to said first heat source heat transfer fluid first inlet and from said heat transfer fluid first outlet to said heat transfer fluid second inlet, first temperature sensor means to sense the temperature of said heat transfer fluid at said first heat transfer inlet; to provide a first signal; second temperature sensor means to sense the temperature of at least one of said first second heat source means to provide a reference signal, comparator means to compare said first signal and said reference signal wherein said comparator means provides a first comparator output signal where said first and reference signals are in first relation and provide second comparator output signal when said first and reference signals are in second relation, valve operator means to operate said valve means between said first mode and said second mode in response to said first and second comparator signals.