# Thermos lab

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Thermos lab
~~~~~~~~~~~~~~
MIME 3470—Thermal Science Laboratory
~~~~~~~~~~~~~~
Laboratory №. 17
Refrigeration Cycle Analysis
Students’ Names / Section №

POINTS
SCORE
TOTAL
PRESENTATION—Applicable to Both MS Word and Mathcad Sections

GENERAL APPEARANCE
5

ORGANIZATION
5

ENGLISH / GRAMMAR
5

ORDERED DATA, CALCULATIONS & RESULTS

TABLE OF PROPERTIES FOR THE 8 STATES
10

PLOT IDEAL CYCLE (W/ BLOCK ARROWS) USING PRESSURES 3 & 8
10

PLOT ACTUAL CYCLE (W/ BLOCK ARROWS)
10

CALCULATE &
10

TECHNICAL WRITTEN CONTENT

DISCUSSION—GENERAL DISCUSSION OF CALCULATIONS
5

EXPLAIN IN TERMS OF 1ST & 2ND LAWS THE DISCREPENCIES BETWEEN THE TWO PLOTS ABOVE
10

ARE THE DISCREPENCIES IN THE PROPER DIRECTION(S)?
10

SHOULD THERE BE DIFFERENCES BETWEEN THE ACTUAL & IDEAL CYCLES?
10

CONCLUSIONS
5

ORIGINAL DATASHEET
5

TOTAL
100

MIME 3470—Thermal Science Laboratory
~~~~~~~~~~~~~~
Laboratory №. 17
Refrigeration Cycle Analysis
~~~~~~~~~~~~~~
Lab Partners: Name Name Name Name Name Name
Section №
Experiment Time/Date: Time, date
~~~~~~~~~~~~~~
OBJECTIVE—of this exercise is to determine the various coefficients of performance, COP. Specifically, these are the ideal and actual cycle COPs using the attached thermodynamic diagram for Refrigerant-12 (R12).

INTRODUCTION—A refrigeration cycle is a cycle which transfers heat from a low temperature sink to a high temperature sink by the application of energy from a third source. A refrigeration cycle differs from what is commonly called a heat pump in that the desired output is the heat transfer from the cold sink rather than the heat transfer to the hot sink.
The most common

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