Share

IIR document

OPPORTUNITIES FOR VARIABLE SPEED MODULATION IN REFRIGERATION.

Author(s) : WILSON R. D.

Summary

SPEED VARIATION MAKES IT POSSIBLE TO ADAPT THE REFRIGERATING CAPACITY OF THE COMPRESSOR TO THE LOAD OF THE SYSTEM. IN THE CASE OF AN AMERICAN SUPERMARKET, THE ANNUAL RANGE OF REFRIGERATING NEED CAN REACH A FACTOR OF 3. USING A VARIABLE-SPEED COMPRESSION SYSTEM, IT IS POSSIBLE TO OBTAIN ENERGY SAVINGS OF 25%. GIVEN THE ENERGY AND INVERTER COSTS, A 4 YEAR PAYBACK IS ACHIEVABLE. FOR PARALLEL SYSTEMS, ENERGY SAVINGS DEPEND ON THE CONTROL OF THE SUCTION PRESSURE. SAVINGS ON THE ORDER OF 7% ARE ACHIEVABLE. WHEN THE INVERTER AND THE COMPRESSOR ARE WELL MATCHED, EXPERIMENTAL RESULTS SHOW SATISFACTORY EFFICIENCY FOR A SPEED VARYING FROM 30 TO 60 HERTZ. BELOW 30 HERTZ, EFFICIENCY DECREASES IN SUCH A WAY THAT NO SAVING IS OBTAINABLE.

Available documents

Format PDF

Pages: 1988-3

This document is to be digitised and will be available within 10 working days

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: OPPORTUNITIES FOR VARIABLE SPEED MODULATION IN REFRIGERATION.
  • Record ID : 1990-1675
  • Languages: English
  • Source: Refrigeration for food and people.
  • Publication date: 1988/09/05
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles from the proceedings (34)
See the conference proceedings

Indexing