Regulation of room temperature is determined by characteristic of assembly of control valve
and heat exchanger, which depends on characteristics of individual elements. Diploma thesis
discuses determination of flow characteristic of different control valves based on
measurements. The test rig for measurements of pressure drop and flow through control
valve and calculation of flow characteristic from measured data are discussed. The way to
determine common characteristic of valve and heat exchanger is shown. Thesis discusses
conditions for regulation system quality. Valves with equal percentage characteristics
enables linear common characteristics, which provides optimal system regulation ability.
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