| 摘要 |
<p>A heat exchange assemblage (1161) is adapted for use with other such heat exchange assemblages for cooling or heating a controlled environment, or controlling the humidity thereof. Each heat exchange assemblage is intended for use in conjunction with a communication network linking all such heat exchange assemblages, but each can operate autonomously if the network fails. Each heat exchange assemblage includes a heat pump (1116) and a controller (1161c). At startup, the controller (1161c) determines whether its previous state was PRIMARY or SECONDARY, and tries to assume the corresponding state. If no one assemblage assumes PRIMARY status, a random scheme in conjunction with communications aids in establishing one of the assemblages as PRIMARY, while others remain SECONDARY. The controller (1161c) of the PRIMARY assemblage compares the current environmental state, as established by signals arriving at its communication port (1161cp), with a setpoint, which may also be remotely set, to control operation. A SECONDARY assemblage may compare the rate of change of the current environmental state with a rate-of-change setpoint, to determine when the SECONDARY assemblage should operate.</p> |
