A 5 x 10 meters kitchen area (average ceiling height is 2.8 meters) is to design for general ventilation. There are 6 personnel working in the kitchen and the heat generated in this area is estimated at 90,000 Btu/hr. The design indoor temperature is 26°C and outdoor air temperature is 35°C. Calculate the ventilation rate (in cfm) using: (1.) Area Method, (2.) Air Change Method, (3.) Occupancy Method, and (4.) Heat Removal Method.

A 5 x 10 meters kitchen area (average ceiling height is 2.8 meters) is to design for general ventilation. There are 6 personnel working in the kitchen and the heat generated in this area is estimated at 90,000 Btu/hr. The design indoor temperature is 26°C and outdoor air temperature is 35°C. Calculate the ventilation rate (in cfm) using: (1.) Area Method, (2.) Air Change Method, (3.) Occupancy Method, and (4.) Heat Removal Method.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter44: Geothermal Heat Pumps

Section: Chapter Questions

Problem 12RQ: The function of the pressure tank in an open-loop, geo-thermal heat pump well system is to prevent...

See similar textbooks

Similar questions

I need right solution with clear calculations. A workplace is occupied by 100 people who are averaging 250 Watts/person. The space is measured as 30 meters x 20 meters x 15 meters (L x W x H). What is the internal heat gain of this space given off by a full staff? If you need to provide the workplace 10 air changes per hour, what type of infiltration inflow rate need to be (cubic meters/hour)?
Residual oil, with a heating value of 18,480 BTU/lbm, is used as a fuel in a power plant which produces 947,870 BTU/s of electricity. The overall efficiency of the power plant is 52%. Determine the: a. Heat input, in BTU/s b. Daily fuel consumption, in lbm c. Dimensions of the cylindrical storage (assuming length is equal to the diameter), in ft. d. Heat rejected to the environment, in BTU/s. The density of the oil is 62 lbm/ft3
Draw and describe the pyhsical construction, internal energy developed as well as the application of the following set of energy level: 1. Blower 2. Steam Pump 3. AC and DC generators
Q.4 (a) Explain the steps involved in representing the natural and mechanically driven air flows within a building using the nodal network method.
The brewing process involves 4 steps. Boiling, Fermenting, Filtering and Kegging. The batch size is 100 gallons for the boil and fermentation tanks. Process times for the different steps are Boiling: 8 hours/100 gal, Fermenting: 15 days/100 gal, Filtering: 10 gal/hour, Kegging 10 min/5 gal. In order to improve the productivity they decide to introduce a holding tank between the fermentation and filtration steps. They are able to drain the fermentation tank at a rate of 30 gal/hour. Ferment WIP Keg Boil Filter What is the minimum WIP tank size they need? (Round your answer to the nearest 10 gallons) Assume 24 hours/day
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A steam power plant receives heat from a furnace at a rate of 280 GJ/h. Heat losses to the surrounding air from the steam as it passes through the pipes and other components are estimated to be about 8 GJ/h. The waste heat is transferred to the cooling water at a rate of 170 GJ/h. Problem 06.017.a - Net power output of steam power plant Determine the net power output. (You must provide an answer before moving to the next part.) The net power output is MW.
Given problem: Tolits is working on a restaurant famous for its soup. His end of shift is 5:00 pm and needs to go home by that time to pick up his wife, Marites for their anniversary date. A customer made a reservation at 5:15 pm and wants his soup to be ready at that exact time. To ensure the quality of the soup, it should be served at a temperature which is exactly 86C. Tolits needs to prepare the soup before the end of his shift. Initially, as Tolits is preparing the soup, its temperature is 21∘C and placed on a pan heated at 149∘C. After 5 minutes, its temperature is 36∘C. The soup is done (cooked) once its temperature is 120∘C. Tolits found out that cooling it in a sink full of cold water, while the faucet is running with the water resulting to roughly constant temperature of 26∘C, could bring the temperature of the soup to 86C to be ready at 5:15 pm. How many minutes before the end of the shift of Tolits should he start cooking soup so that he is done before 5:00 pm and his…
QIt is required to air condition a factory building (27mx 18mx4m). The 27m wall is type B and faces south. The following data is available: Two glass windows in south wall 3mx 1.5m each with internal shade, lighting load is 20 Watt fluorescent per m² floor area. The inside air conditions are: 24°C DBT and 50% RH. The outside air conditions are: 40°C DBT, DR-18.0°C and 30°C WBT. Other related data are: Uwall=1.4 W/m² K, Uglass 3.5 W/m² K, Scglass=0.7, occupancy=8 persons doing light bench work and CLF occupancy 0.85. The building is of heavy construction with light color located at 40°N. Calculate the building cooling load from the South wall, windows, lighting and occupancy on August at 4:00 p.m. الاتحاد
QIt is required to air condition a factory building (27mx 18mx4m). The 27m wall is type B and faces south. The following data is available: Two glass windows in south wall 3mx 1.5m each with internal shade, lighting load is 20 Watt fluorescent per m² floor area. The inside air conditions are: 24°C DBT and 50% RH. The outside air conditions are: 40°C DBT, DR-18.0°C and 30° WBT. Other related data are: Uwall-1.4 W/m² K, Uglass-3.5 W/m² K, Scglass-0.7, occupancy-8 persons doing light bench work and CLF occupancy=0.85. The building is of heavy construction with light color located at 40°N. Calculate the building cooling load from the South wall, windows, lighting and occupancy on August at 4:00 p.m.
3:57 A Done lecture 7_b5ee35c08478147bb8a3744a... Lec. (7) tar -Dry bulb temperature O Example (1): An air conditioning equipment (figure) have the following: - Supply air mass-1.26 kg/s. The cooling coil receives 20 % outdoor air and 80% return air. tdz Fig. 18.14. Representation of supply air condition and room design condition. 0.252 kg/s Refrigeration and A/C - Outdoor air conditions are: 28°C db, 19.5°C wb Return air conditions are: 22°C db, 50% RH. The mixture air condition outlet the cooling coil are: 10°C db, 0.00735 kg/kgda Draw the system on the Psychrometric chart, then calculate: 1. Cooling coil load. 2. Room sensible heat. 3. Room latent heat. 4. Fresh (outdoor) load. 5. Duct and fan heat gain 6. Sensible heat ratio SHR. If the supply air temperature increases with a value 1°K due to fan motor heat gain and 2°K due to duct heat gain. . ← 1.008 kg/s R to Dr. Omar M. Ali LTE الغرفة المراد تكييفها (22,50 %) 1.26 kg/s R Grand Sensible Heat Factor It is defined as the ratio of…
Töllowing datas refers to design of an air conditioning systam of a theater Total seating capacity ... ... 600 persons Sensible heat per person . . 200 kJ/hr. .......... 130 kJ/hr. Solar beat gain through glass, doors and walls......0 KJ/hr. Outside design condition. .40°C DBT and 27°C WBT Latent hcat per pcrson .... .... Inside design condition .. ........ 25°C DBT and 50% RH Apparatus dewpoint temperature of cooling coil .... 50% of return air is recirculated and it is mixed with fresh air before enterin cooling coil. Calculate: 4°C (i) By-pass factor of the cooling coil. (ii) The mass low rate of supply air to system. (iii) The refrigeration capacity of the coil in tons of refrigcration
Calculating the Cooling load of refrigeration for the Chiller and the Electrical Energy Consumed by the chiller. Determine the formular for deriving the kWR (Kilowatts of Refrigeration). (the cooling load for a chiller). Now calculate kWR, kWE and COP, and fill in the missing values of the table (Log started). (Note: majority of kWE has already been calculated), show working out. Time Flow (Litres per second) EnterTemp (C) LeaveTemp (C) kWE (kW) 30/04/2021 8:50 24.21847528 12 5.900000095 66.55913978 30/04/2021 8:51 24.21847528 12 5.900000095 66.55913978 30/04/2021 8:55 23.51422053 12.10000038 6 64.62365591 30/04/2021 8:56 23.51422053 12.10000038 6 64.62365591 30/04/2021 9:00 27.64518476 12.10000038 6.099999905 80.81395349 30/04/2021 9:01 25.62528992 Log Started Log Started Log Started Log Started Log Started 12.10000038 5.699999809 80.11764706