• No results found

Use the pressure enthalpy charts and the saturated table (following the chart in the book) for R134A.

N/A
N/A
Protected

Academic year: 2022

Share "Use the pressure enthalpy charts and the saturated table (following the chart in the book) for R134A."

Copied!
2
0
0

Bezig met laden.... (Bekijk nu de volledige tekst)

Hele tekst

(1)
(2)

ULT-Freezers (Ultra low temperature) are needed for COVID-19 vaccine. A 5-ton rated cascade refrigerator is used to cool COVID RNA vaccine. Find the COP for the refrigerator and that for a Carnot cycle and the flowrates for the two cycles in the cascade. Stage 1 uses R134A

refrigerant and Stage 2 uses ethane. The condenser is at 30°C, the inter-stage heat exchanger is at -30°C and the evaporator is at -86°C. Assume that the heat exchanger has no loss. 1 ton = 12,600 kJ/h. Use the pressure enthalpy charts and the saturated table (following the chart in the book) for R134A.

Referenties

GERELATEERDE DOCUMENTEN

We prove a formula for the number of la- belled trees on n vertices with a given local indegree sequence or number of sources such that a given vertex r is a sink of degree d.. We

… Het verbeteren van de efficiency van de gehele groep, bijvoorbeeld door het benutten van schaalvoordelen of het gebruik van een uniforme infrastructuur. … Het bieden

Het Fourier onderzoek ondersteunt niet de claim die de fabrikant nu voorlegt, weerspiegelt niet de populatie zoals die in Nederland behandeld wordt, en daarmee is deze claim

A number of the green activities taking place in the informal economy were also recognised by national policies and plans related to the green economy as well as by green economy

In the first study, we asked experts and laymen in design to evaluate the familiarity, perceived ease of use, and attractiveness of a set of more and less conventional graph

The w lines following 1c, 2c, and 3c in the listing show the minimum column widths specified by the ‘w’ keys in the format; 35 pt is 7 times TABLE’s default column width unit of 0.5

Allusions to Old Testament passages on a suffering righteous one are found in Mark, but that does not mean that such passages may be supposed to be alluded to in

• Earlier research shows a positive relation between celebrity endorsement and pro-social intention • Earlier research shows a positive relation between the celebrities connection