A producer made measurements on his reversible heat pump. He measured during 1 hour an electricity input of 5 [kW] at compressor, a heat output of 25 [kW] at the condenser and a heat uptake of 20 [kW] at the evaporator. What is the ?EER of the heat pump in cooling mode 10 4 5 O 0.25 O 0.20 O

A producer made measurements on his reversible heat pump. He measured during 1 hour an electricity input of 5 [kW] at compressor, a heat output of 25 [kW] at the condenser and a heat uptake of 20 [kW] at the evaporator. What is the ?EER of the heat pump in cooling mode 10 4 5 O 0.25 O 0.20 O

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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No card B a m OO O N 95)1:47 mlms.hu.edu.jo/mod/qu Two tanks are placed on table: Tank (1) contains one kg of gas type A at Temperature T, (K), while Tank (2) contains one kg of gas type B at temperature [ (19/7) T,]. The tanks are then put into thermal contact with each other and heat flows between until the gases reach a common final temperature T,"tanks are insulated from all other boundaries". Knowing that the specific heat ratio (CvA /CvB) = (9/7) , The final temperature (K) will be : Select one: A. 1.375 T. B. 1.250 T. c. No enough information D. 1.625 T. E. 1.750 T. F. 1.875 T. G. 1.500 T, ...
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The left side of this equation tells how much energy Q the cylinder gives to the water while it cools. The right side of this equation tells how much energy Q the water and aluminum cup absorb from the cylinder to warm up. Because it is the same energy, they are equal. What is known in this equation? Mcyl 411.7 g, malum 46.5 g, malum+water = 175 g Can you find: mwater =? g Twater = Talum = 20°C (water and cup of room temperature) 90°C, T; = 35°C (hot cylinder and cool "cylinder+cup+water" temperatures) Tcyl kCal Calum = 0.22, Cwater 1 (specific heat of water and aluminum, measured in units kg-°C What are we looking for is Ccul - How we find it? Plug all the numbers into the equation (1), Ccul will be one unknown which you can calculate from the equation. Important, convert all the masses from grams to kilograms! After you find Ccyl, compare it to known value for the copper 0.093(our cylinder is made out of copper). |Ceyl -0.093| % : · 100% 0.093
In order to fnd the specifc heat c of an unknown substance, you place 75 g of the substance in a 30 g copper calorimeter that contains 65 g of water, all initially at 20 °C. You then add 100 g of water at 80 °C, and measure the fnal temperature of the system to be 49 °C. Assuming no heat is lost to the environment, what is c? [Answer: c = 2200 J/kg. K] 즈
令l。 A:0 ۲۳ شباط تحریر > Subject : Engineering Thermodynamics 1 2 nd I Production , Industrial class Date : 24/2/2021 Branch A system contains co.15 m²) of at gas * pressure of C4 ber ) and s 150 °c) . It is ex panded isothermally till the falls pressure is then cooled gas to ( 1 bar ). The a cons tant pressure till its heat Lost ( 70 KJ ). Draw the processe at on (P-V) sses diagram , and determine the net work done. [ Take, KT 1 Cy = 0.714 KJ
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Q1. The net potential energy between two adjacent ions, EN, is represented by %3D A В EN r pn where En is the net energy in Joule (J), A and B are constants with values of 1.436 J.nm and 7.32 × 106 J.nm, r is the interatomic distance between the two ions in nanometer (nm), and n is a positive number 8 with a value of 8. Using these information, determine the equilibrium spacing between the two ions in nanometer (nm).
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Wind power is defined as the use of air flow through wind turbines to provide the mechanical force to generate electricity. Wind power is an alternative to burning fossil fuels, and is renewable and produces no greenhouse gas emissions during operation. Modern horizontal-axis wind turbines often use three blades. Theoretically, the maximum power P (unit: watts) that a three-blade wind turbine can extract from the wind power can be calculated as: P = pAv³C₁. . (Equation 1) where p is the air density (kg/m³), A is the sweep area of the turbine (m²) and can be calculated from the length of the turbine blades, and v is the wind speed (m/s). Cp is the power coefficient that is unique to each turbine type. This coefficient represents the amount of kinetic energy from the wind that is captured by the turbine. From the Betz's limit law we know that the best power conversion possible is Cp,max = 0.59. Part 1 Given the following data: Blade length /= 50 m Air density p= 1.5 kg/m³ Power…
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The published technical information is shown below for TempStar air conditioners. Rating is provided for an outside air temperature of 95°F and an inside temperature of 80°F. For the model N4A318AKA: a.What is the COP [1.96] b.What is COP Carnot [36.0]
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