Hydronic System and Control Method

A hydronic system controls the air temperature in a plurality of zones. The system has a plurality of heat exchangers, each one being associated with a respective zone. The mass flow rate of a working fluid through each heat exchanger is controlled to maintain the working fluid temperature drop acro...

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Hauptverfasser: REILLY WILLIAM J, REILLY WILLIAM C
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creator REILLY WILLIAM J
REILLY WILLIAM C
description A hydronic system controls the air temperature in a plurality of zones. The system has a plurality of heat exchangers, each one being associated with a respective zone. The mass flow rate of a working fluid through each heat exchanger is controlled to maintain the working fluid temperature drop across the heat exchanger a constant, chosen for efficient operation of the boiler or chiller which transfers heat to or from the working fluid. The flow of air in each zone through each heat exchanger is controlled by the air temperature in the zone. A respective valve associated with each heat exchanger is used to control the mass flow rate of the working fluid through the heat exchanger, and also imposes an upper limit of the mass flow rate established by balancing the hydronic system. The upper limit is controlled by a parameter proportional to mass flow rate.
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subjects BLASTING
CONTROLLING
DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION
HEAT EXCHANGE IN GENERAL
HEATING
LIGHTING
MECHANICAL ENGINEERING
PHYSICS
REGULATING
SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
WEAPONS
title Hydronic System and Control Method
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