GB/T 30261-2013Evaluation methods for exergy efficiency of plate heat exchangers of refrigeration and air-conditioning systems (English PDF)

1 Scope

This standard specifies the refrigeration and air conditioning evaluation plate heat exchanger efficiency, test methods and requirements, labeling and so on.

This standard applies to the design pressure of not more than 5.0MPa of air conditioning refrigeration plate heat exchanger (hereinafter referred to as heat).

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 7725-2004 room air conditioner

GB/T 10870-2001 displacement and centrifugal water (heat pump) performance test methods

GB/T 25129-2010 cooling air cooler

JB/T 8701 refrigeration plate heat exchanger

JB/T 10379 heat exchanger thermal performance and flow resistance characteristics common measurement method

3 Terms and Definitions

JB/T 8701 defined by the following terms and definitions apply to this document.

4 Evaluation

Heat exchange efficiency of the heat exchanger using efficiency evaluation. A heat exchanger efficiency predetermined manner in accordance with the formula (1) and section 5 and Appendix

Measurement and Calculation.

eta =

deltaEout

-deltaEin ×

100% = qm, outqm, in

· (Hout, 2-hout, 1) -T0 (sout, 2-sout, 1) (hin, 1-hin, 2) -T0 (sin, 1-sin, 2) ×

100% (1)

Where.

deltaEin, deltaEout --- are the input and output side of the fluid side of the fluid changes in joules (J);

qm, in, qm, out --- respectively mass flow input side and the output side of the fluid flow, in kilograms per second (kg/s);