A simple building with walls of unknown construction has been determined to have a super insulated...
A simple building with walls of unknown construction has been determined to have a super insulated roof, which allows essentially no heat transfer. You are to determine the heat transfer coefficient for the walls. The walls measure 1 foot thick, and the building is of rectangular shape 20 feet on the long side in 10 feet on the short side with ceilings 8 feet high. From the heating bills for the month of January, in which the average outside temperature was 30°F, it was determined that the house loses heat at the rate of 5000 BTU/hour. During that month the interior temperature was held at an average of 68°F. Since the building has only two small windows and one door the effect of these on heat transfer can be neglected for the purposes of this initial study
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A simple building with walls of unknown construction has been
determined to have a super insulated...
A building in Newark, NJ has an UTAT characteristics of 3000 Btu/hr.-oF and an internal heat...
A building in Newark, NJ has an UTAT characteristics of 3000 Btu/hr.-oF and an internal heat load of 9,000 Btu/hr. The design building interior temperature is 68°F. The building is heated with oil, which has a heating value of 140,000 Btu/gal. and an oil furnace efficiency of 80%. If the oil tank in the building contains 700 gal. of oil, will this be sufficient to heat the building in an average month of February in Newark, NJ? Show the calculations...
Heat Loss and Heating Costs of a House Part A A house has well-insulated walls 17.1...
Heat Loss and Heating Costs of a House Part A A house has well-insulated walls 17.1 cm thick (assume conductivity of air) and area 411 m2, a roof of wood б.бб cm thick and area 279 m2, and uncovered windows 0.626 cm thick and total area 33.4 m2. Assuming that the heat loss is only by conduction, calculate the rate at which heat must be supplied to this house to maintain its temperature at 21.4°C if the outside temperature is...
need help Problem 5: Suppose a house's walls are 14 cm thick and and have an...
need help
Problem 5: Suppose a house's walls are 14 cm thick and and have an average thermal conductivity twice that of glass wool. Substance Glass wool Wool Glass Human body Ceramic Wood Air Fatty tissue Styrofoam Thermal conductivity (J/s.m.) 0.042 0.04 0.84 0.2 0.84 0.08-0.16 0.023 0.2 0.010 Otheexperta.com Part (a) Calculate the rate of heat conduction, in watts, through the house's walls. Assume there are no windows or doors. The surface area of the walls is 105 m...
need someone to walk me through this Home Weatherization: A Simulation Many homes have been constructed...
need someone to walk me through this
Home Weatherization: A Simulation Many homes have been constructed with insufficient insulation and without proper weatherization. Homes can be made more energy efficient by adding attic and crawl space insulation, by installing storm doors and storm windows, and by caulking windows and doors. In order to conserve energy and save money on fuel bills, you have decided to investigate a home weatherization program for your house. To weatherize your home, you need to...
Consider a house that has a 10-m x 20-m base and a 4-m-high wall. All four...
Consider a house that has a 10-m x 20-m base and a 4-m-high wall. All four walls of the house have an R-value of 2.31m2°C/W. The two 10-m x 4-m walls have no windows. The third wall has five windows made of 0.5-cm-thick glass (k = 0.78 W/m-K), 1.2m x 1.8min size. The fourth wall has the same size and number of windows, but they are double paned with a 1.5-cm-thick stagnant air space (k = 0.026 W/m-K) enclosed between...
4. Commercial building energy analysis. This problem analyzes how large commercial buildings use using data from...
4. Commercial building energy analysis. This problem analyzes how large commercial buildings use using data from the Photonics Center In particular, we want to compare the energy needed to condition the air flowing through the building, with the energy needed to 1) provide heat in the winter to balance the heat loss from the walls to the environment, and 2) provide the necessary cooling in the summer time to overcome the heat gain from the outside air (lets ignore solar...
summarizr the followung info and write them in your own words and break them into different...
summarizr the followung info and write them in your own words and break them into different key points. 6.5 Metering Chamber: 6.5.1 The minimum size of the metering box is governed by the metering area required to obtain a representative test area for the specimen (see 7.2) and for maintenance of reasonable test accuracy. For example, for specimens incorporating air spaces or stud spaces, the metering area shall span an integral number of spaces (see 5.5). The depth of...
summatize the following info and break them into differeng key points. write them in yojr own...
summatize the following info and break them into differeng key points. write them in yojr own words
apartus
6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
HDT Truck Company HDT Truck Company has been located in Crown Point, Indiana, since 1910. Its...
HDT Truck Company HDT Truck Company has been located in Crown Point, Indiana, since 1910. Its only products— large trucks—are built to individual customer specifications. The firm once produced automobiles but dropped out of the auto business in 1924. The firm nearly went out of business in the late 1930s, but by 1940 its fortunes were buoyed by receipt of several military contracts for tank retrievers—large-wheeled vehicles that can pull a disabled tank onto a low trailer and haul it...
A building in Newark, NJ has an UTAT characteristics of 3000 Btu/hr.-oF and an internal heat load of 9,000 Btu/hr. The design building interior temperature is 68°F. The building is heated with oil, which has a heating value of 140,000 Btu/gal. and an oil furnace efficiency of 80%. If the oil tank in the building contains 700 gal. of oil, will this be sufficient to heat the building in an average month of February in Newark, NJ? Show the calculations...
Heat Loss and Heating Costs of a House Part A A house has well-insulated walls 17.1 cm thick (assume conductivity of air) and area 411 m2, a roof of wood б.бб cm thick and area 279 m2, and uncovered windows 0.626 cm thick and total area 33.4 m2. Assuming that the heat loss is only by conduction, calculate the rate at which heat must be supplied to this house to maintain its temperature at 21.4°C if the outside temperature is...
need help
Problem 5: Suppose a house's walls are 14 cm thick and and have an average thermal conductivity twice that of glass wool. Substance Glass wool Wool Glass Human body Ceramic Wood Air Fatty tissue Styrofoam Thermal conductivity (J/s.m.) 0.042 0.04 0.84 0.2 0.84 0.08-0.16 0.023 0.2 0.010 Otheexperta.com Part (a) Calculate the rate of heat conduction, in watts, through the house's walls. Assume there are no windows or doors. The surface area of the walls is 105 m...
need someone to walk me through this
Home Weatherization: A Simulation Many homes have been constructed with insufficient insulation and without proper weatherization. Homes can be made more energy efficient by adding attic and crawl space insulation, by installing storm doors and storm windows, and by caulking windows and doors. In order to conserve energy and save money on fuel bills, you have decided to investigate a home weatherization program for your house. To weatherize your home, you need to...
Consider a house that has a 10-m x 20-m base and a 4-m-high wall. All four walls of the house have an R-value of 2.31m2°C/W. The two 10-m x 4-m walls have no windows. The third wall has five windows made of 0.5-cm-thick glass (k = 0.78 W/m-K), 1.2m x 1.8min size. The fourth wall has the same size and number of windows, but they are double paned with a 1.5-cm-thick stagnant air space (k = 0.026 W/m-K) enclosed between...
4. Commercial building energy analysis. This problem analyzes how large commercial buildings use using data from the Photonics Center In particular, we want to compare the energy needed to condition the air flowing through the building, with the energy needed to 1) provide heat in the winter to balance the heat loss from the walls to the environment, and 2) provide the necessary cooling in the summer time to overcome the heat gain from the outside air (lets ignore solar...
summatize the following info and break them into differeng key points. write them in yojr own words
apartus
6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
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