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12:25 l LTE Done 1 of 26 by 60° C. 3. 4. 5. 6. 11.16 Determine the temperature rise that would occur when 2 kg of the following materials are exposed to a heating element putting out 500 J. Discuss your assumptions. m 11.12 Resistance (m? · K/W) a. The material is copper. b. The material is aluminum. ance (winter, 0.029 c. The material is concrete. 11.17 The thermal conductivity of a solid material can be determined using a setup similar to the one shown in the accompanying figure. The thermocouples are placed at 2.5 cm intervals in the known material (copper alloy, k = 52) and the unknown sample, as shown. 0.138 mx 240 mm lapped) regular) 0.225 3.23 5 mm) 0.077 (15 mm) m -k ce (winter) 0.116 The known material is heated on the g of a house consists of items =companying table. Assume temperature of 21° C and perature of –10° C, with an f 100 m². Calculate the heat e ceiling. top by a heating element, and the bottom surface of the sample is cooled by running water through the heat sink shown. Determine the thermal conductivity of the unknown sample for the set of data given in the accompanying table. Assume no heat loss to the surroundings and perfect thermal contact at the common interface of the sample and the copper. 1. 2. Hot plate 3. 4. Insulation Resistance (m² · K/W) 3 istance 0.116 O mm) 3.23 4 0.077 (15 mm) Cold water in Cold plate Warm water out < ce (winter) 0.116 Problem 11.17 erved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). nt does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. Temperature and Temperature-Related Variables in Engineering 97 80

12:25 l LTE Done 1 of 26 by 60° C. 3. 4. 5. 6. 11.16 Determine the temperature rise that would occur when 2 kg of the following materials are exposed to a heating element putting out 500 J. Discuss your assumptions. m 11.12 Resistance (m? · K/W) a. The material is copper. b. The material is aluminum. ance (winter, 0.029 c. The material is concrete. 11.17 The thermal conductivity of a solid material can be determined using a setup similar to the one shown in the accompanying figure. The thermocouples are placed at 2.5 cm intervals in the known material (copper alloy, k = 52) and the unknown sample, as shown. 0.138 mx 240 mm lapped) regular) 0.225 3.23 5 mm) 0.077 (15 mm) m -k ce (winter) 0.116 The known material is heated on the g of a house consists of items =companying table. Assume temperature of 21° C and perature of –10° C, with an f 100 m². Calculate the heat e ceiling. top by a heating element, and the bottom surface of the sample is cooled by running water through the heat sink shown. Determine the thermal conductivity of the unknown sample for the set of data given in the accompanying table. Assume no heat loss to the surroundings and perfect thermal contact at the common interface of the sample and the copper. 1. 2. Hot plate 3. 4. Insulation Resistance (m² · K/W) 3 istance 0.116 O mm) 3.23 4 0.077 (15 mm) Cold water in Cold plate Warm water out < ce (winter) 0.116 Problem 11.17 erved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). nt does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. Temperature and Temperature-Related Variables in Engineering 97 80

Elements Of Electromagnetics
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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12:25 l LTE Done 1 of 26 by 60° C. 3. 4. 5. 6. 11.16 Determine the temperature rise that would occur when 2 kg of the following materials are exposed to a heating element putting out 500 J. Discuss your assumptions. m 11.12 Resistance (m? · K/W) a. The material is copper. b. The material is aluminum. ance (winter, 0.029 c. The material is concrete. 11.17 The thermal conductivity of a solid material can be determined using a setup similar to the one shown in the accompanying figure. The thermocouples are placed at 2.5 cm intervals in the known material (copper alloy, k = 52) and the unknown sample, as shown. 0.138 mx 240 mm lapped) regular) 0.225 3.23 5 mm) 0.077 (15 mm) m -k ce (winter) 0.116 The known material is heated on the g of a house consists of items =companying table. Assume temperature of 21° C and perature of –10° C, with an f 100 m². Calculate the heat e ceiling. top by a heating element, and the bottom surface of the sample is cooled by running water through the heat sink shown. Determine the thermal conductivity of the unknown sample for the set of data given in the accompanying table. Assume no heat loss to the surroundings and perfect thermal contact at the common interface of the sample and the copper. 1. 2. Hot plate 3. 4. Insulation Resistance (m² · K/W) 3 istance 0.116 O mm) 3.23 4 0.077 (15 mm) Cold water in Cold plate Warm water out < ce (winter) 0.116 Problem 11.17 erved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). nt does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. Temperature and Temperature-Related Variables in Engineering 97 80
Transcribed Image Text:12:25 l LTE Done 1 of 26 by 60° C. 3. 4. 5. 6. 11.16 Determine the temperature rise that would occur when 2 kg of the following materials are exposed to a heating element putting out 500 J. Discuss your assumptions. m 11.12 Resistance (m? · K/W) a. The material is copper. b. The material is aluminum. ance (winter, 0.029 c. The material is concrete. 11.17 The thermal conductivity of a solid material can be determined using a setup similar to the one shown in the accompanying figure. The thermocouples are placed at 2.5 cm intervals in the known material (copper alloy, k = 52) and the unknown sample, as shown. 0.138 mx 240 mm lapped) regular) 0.225 3.23 5 mm) 0.077 (15 mm) m -k ce (winter) 0.116 The known material is heated on the g of a house consists of items =companying table. Assume temperature of 21° C and perature of –10° C, with an f 100 m². Calculate the heat e ceiling. top by a heating element, and the bottom surface of the sample is cooled by running water through the heat sink shown. Determine the thermal conductivity of the unknown sample for the set of data given in the accompanying table. Assume no heat loss to the surroundings and perfect thermal contact at the common interface of the sample and the copper. 1. 2. Hot plate 3. 4. Insulation Resistance (m² · K/W) 3 istance 0.116 O mm) 3.23 4 0.077 (15 mm) Cold water in Cold plate Warm water out < ce (winter) 0.116 Problem 11.17 erved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). nt does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. Temperature and Temperature-Related Variables in Engineering 97 80
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