Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Chapter 22, Problem 16RQ
Explain the basic operation of a combination ORI and ORD low-ambient head pressure control valve.
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العنوان
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Two rods fins) having same dimensions, one made orass (k = 85 Wm
K) and the mer of copper (k = 375 W/m K), having of their ends inserted
into a furna. At a section 10.5 cm a way from furnace, the temperature of
brass rod 120 Find the distance at which the ame temperature would be
reached in the per rod ? both ends are ex osed to the same environment.
ns
2.05
۲/۱
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For the beam show below, draw A.F.D, S.F.D, B.M.D
6 kN/m
1
M
B.
3
M M
1. Two long rods of the same diameter-one made of brass (k=85w/m.k) and
the other made of copper (k=375 w/m.k) have one of their ends inserted
into a furnace (as shown in the following figure). Both rods are exposed to
the same environment. At a distance of 105 mm from the furnace, the
temperature of the brass rod is 120°C. At what distance from the furnace
will the same temperature be reached in the copper rod?
Furnace
105 mm T₁
Brass rod
⑪
h
Too-
x2-
Ti
Copper rod
Chapter 22 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 22 - Why do some condensers have to be cleaned with...Ch. 22 - The three materials of which condensers are...Ch. 22 - Who should be consulted when condenser cleaning is...Ch. 22 - When is the most heat removed from the refrigerant...Ch. 22 - After heat is absorbed into a condenser medium in...Ch. 22 - A water-cooling tower capacity is governed by what...Ch. 22 - When a standard-efficiency air-cooled condenser is...Ch. 22 - Four methods for controlling head pressure in an...Ch. 22 - The prevailing winds can affect which of the...Ch. 22 - True or False: Air-cooled condensers are much more...
Ch. 22 - The type of condenser that has the lowest...Ch. 22 - Compare the standard conditions of high-efficiency...Ch. 22 - Name two ways in which the heat from an air-cooled...Ch. 22 - Briefly describe what is meant by floating head...Ch. 22 - Explain how to flush impurities from a...Ch. 22 - Explain the basic operation of a combination ORI...Ch. 22 - Name two problems a refrigeration system may have...Ch. 22 - Briefly explain what is meant by condenser...
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- : +0 العنوان use only Two rods fins) having same dimensions, one made orass (k = 85 Wm K) and the mer of copper (k = 375 W/m K), having of their ends inserted into a furna. At a section 10.5 cm a way from furnace, the temperature of brass rod 120 Find the distance at which the ame temperature would be reached in the per rod ? both ends are ex osed to the same environment. ns 2.05 ۲/۱ ostrararrow_forwardمشر on ۲/۱ Two rods (fins) having same dimensions, one made of brass(k=85 m K) and the other of copper (k = 375 W/m K), having one of their ends inserted into a furnace. At a section 10.5 cm a way from the furnace, the temperature brass rod 120°C. Find the distance at which the same temperature would be reached in the copper rod ? both ends are exposed to the same environment. 22.05 ofthearrow_forwardThe composite wall of oven with A= 1m² as in Fig.1 consists of three materials, two of with kA = 20 W/m K and kc = 50 W/m K with thickness, LA=0.3 m, L= 0.15 m and Lc 0.15 m. The inner surface temperature T1=900 K and the outer surface temperature T4 300 K, and an oven air temperature of To=1100 K, h=25 W/m². K. Determine kɛ and the temperatures T2 and T3 also draw the thermal resistance networkarrow_forward
- Two rods (fins) having same dimensions, one made of brass (k = 85 Wm K) and the other of copper (k = 375 W/m K), having one of their ends inserted into a furnace. At a section 10.5 cm a way from the furnace, the temperature of brass rod 120°C. Find the distance at which the same temperature would be reached in the copper rod ? both ends are exposed to the same environment. Ans 22.05arrow_forwardA long wire (k-8 W/m °C.) with ro 5 mm and surface temperature Ts=180°C as shown in Fig.2. Heat is generated in the wire uniformly at a rate of 5 x107 W/m³. If the energy equation is given by: d 11(77) + - =0 k r dr dr Derive an expression for T(r) and determine the temperature at the center of the wire and at r=2 mm. Air Th T KA LA T2 T3 T Fig.1 KB kc 180°C Го Fig.2arrow_forwardB: Find the numerical solution for the 2D equation below and calculate the temperature values for each grid point shown in Fig. 2 (show all steps). (Do only one trail using following initial values and show the final matrix) T₂ 0 T3 0 I need a real solution, not artificial intelligence locarrow_forward
- Can I solve this problem by calculating the initial kinetic energy with respect to G instead of A.arrow_forwardB: Find the numerical solution for the 2D equation below and calculate the temperature values for each grid point shown in Fig. 2 (show all steps). (Do only one trail using following initial values and show the final matrix) T₂ 0 T3 0 locarrow_forwardShow all work. Indicate the origin that is used for each plane. Identify the Miller indices for the following planes. N 23 1 A) X B) yarrow_forward
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