In NH3-water absorption system the heat is supplied to generator by condensing stream at 0.2 MPa. The initial state of the stream is at a dryness fraction of 0.9 and the final state of stream after condensing is saturated liquid. This temperature to be maintained in refrigerator is -10°C and surrounding temperature is 30°C. If relative efficiency is 0.4 and refrigeration load is 20 TR. The steam flow rate is kg/s. [Given: At 0.2 MPa, Tsat = 120°C and hfg=2201.9 kJ/kg]

In NH3-water absorption system the heat is supplied to generator by condensing stream at 0.2 MPa. The initial state of the stream is at a dryness fraction of 0.9 and the final state of stream after condensing is saturated liquid. This temperature to be maintained in refrigerator is -10°C and surrounding temperature is 30°C. If relative efficiency is 0.4 and refrigeration load is 20 TR. The steam flow rate is kg/s. [Given: At 0.2 MPa, Tsat = 120°C and hfg=2201.9 kJ/kg]

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

See similar textbooks

Similar questions

6. An auditorium is to be maintained at a temperature of 26°C & 50% RH, Air is to be supplied at a temperature not lower than 15°C. The sensible heat gain is llokw and the latent heat gain is 37.5 kw, Take venti- lating air as 25% by weight of the air from the room, and is at 35°C & 60% RH. Determine the refrigeration capacity in TR
A heat pump shown is driven by 2.5 MW motor and receives heat from a source at 80 C and deliver energy to a boiler that operates at constant pressure and saturation temperature of 130 C. The water enters the boiler as saturated liquid and leaves as saturated vapor at the same temperature. The heat pump operates with a COP (coefficient of performance) that is 70% of a Carnot heat pump COP. Find: 1- the maximum mass flow rate of water the system can deliver 2- the heat received from the cold source Q, boiler mwater eb TH V HP 2.5 MW TL=80°C
I need the answer as soon as possible
A refrigerator cycle uses refrigerant R-134a and operates between a low-side pressure of 1.5 Bar and high side of 10 Bar. The power input to the compressor 1.88 Kw. find the refrigerant mass flow rate, condensing heat load, and COP of this machine
A heat pump with refrigerant-134a (R-134a) as the working fluid is used to keep a space at 21 °C by absorbing heat from geothermal water that enters the evaporator at Ti,water = 60 °C at a rate of 0.067 kg/s and leaves at To,water = 40 °C. The specific heat of liquid water is 4.18 kJ/(kg∙K). Refrigerant enters the evaporator at TR-134a = 10 °C with a quality of x = 12 % and leaves at the same pressure as saturated R-134a vapor at the same temperature. The compressor consumes 1.4 kW of power. 1)Determine the mass flow rate (in kg/s) of the refrigerant. 2)Determine the rate of heat (in kW) supplied to the space. 2)Determine the COP of the heat pump. 4)Determine the ideal minimum power input (in kW) to the compressor for the same rate of heat supply
The first of the two heat pumps operating on the reverse Carnot cycle 0between 0C and 22oC, and the second between -18oC and 22oCis working. Find the percentage increase between the compressor powers since both are heating at the same value.
pls ans soon
of Performance of the heat pump which should be higher than 100%) when the cabin temperature is 24°C and there is a 20°C temperature difference betveen the indoor cabin and outside at night?
ercise 6 6.1 A surface condenser is fitted with separate air and condensate outlets. A portion of the cooling surface is screened from the incoming steam and the air is passes over these screened tubes to the air extraction and becomes cooled below the condensate temperature. The condenser receives 20 000kg/hr of dry saturated steam at 36.2°C. At the condensate outlet the temperature is 34.6°C TK and at the air extraction the temperature is 29°C. The volume of air and vapour leaving the condenser is 3.8m3/min. Assume constant pressure throughout the condenser, calculate: 6.1.1 the mass of air removed per 10 000kg of steam (2.63kg); 6.1.2 the mass of steam condensed in the air cooler per minute (0.5kg/min)%3B 6.1.3 the heat rejected to the cooling water (13451kW).
I need help on the following question: The vapour compression cycle (picture provided), utilises the refrigerant R134a flowing at 0.05 kg s-1. Assuming that the compression is adiabatic and reversible. If the actual input power to the compressor is 2 kW, then: 1. You need to determine the theoretical input power to the compressor and the heat transfer (Φ) to theevaporator. Take the enthalpies h1, h2, and h3 to be 238.41, 263.68 and 81.5 kJ kg-1 (use the 'NH3 Refrigeration Table' where you can find online). 2. You need to determine the coefficient of performance based on your answer to the previous question (1). 3. You need to determine the compressors mechanical efficiency.
Please show step by step solution not just answers and how each value is derived dont just mention from a table becuase i cant fnd it, if mentioned please display it.
A pump is installed in a pipe system, where at the suction side 1.0 m below the pump, an open manometer reads a vacuum of 20 cm of mercury. The pipe is 10 cm in diameter and the flow is 35 L/s of water. Find the total energy at the location of the manometer, relative to a datum, through the pump. A. 12.74 m B. 2.56 C. -2.72 m D. -4.67 m