A house is losing heat at a rate of 1800 kJ/h per °C temperature difference between the indoor and the outdoor temperatures. Express the rate of heat loss from this house per ( a ) K. ( b ) °F, and ( c ) R difference between the indoor and the outdoor temperature.
A house is losing heat at a rate of 1800 kJ/h per °C temperature difference between the indoor and the outdoor temperatures. Express the rate of heat loss from this house per ( a ) K. ( b ) °F, and ( c ) R difference between the indoor and the outdoor temperature.
A house is losing heat at a rate of 1800 kJ/h per °C temperature difference between the indoor and the outdoor temperatures. Express the rate of heat loss from this house per (a) K. (b) °F, and (c) R difference between the indoor and the outdoor temperature.
(a)
Expert Solution
To determine
The rate of heat loss from a house is 1800kJ/hper°C express in Kelvin scale.
Answer to Problem 94RP
The rate of heat loss from a house is 1800kJ/hper°C express in Kelvin scale is 1800kJ/hperK_.
Explanation of Solution
Refer Figure 1.13.
Write the expression of magnitude of temperature unit.
ΔT(K)=ΔT(°C) (I)
Since the temperature of a system is rising during hyperthermia, the temperature in Kelvin and Celsius unit are identical.
Conclusion:
Substitute 1800kJ/hper°C for ΔT(°C) in Equation (I).
ΔT(K)=1800kJ/hper°C=1800kJ/hper K
Thus, the rate of heat loss from a house is 1800kJ/hper°C express in Kelvin scale is 1800kJ/hperK_.
(b)
Expert Solution
To determine
The rate of heat loss from a house is 1800kJ/hper°C express in Fahrenheit scale.
Answer to Problem 94RP
The rate of heat loss from a house is 1800kJ/hper°C express in Fahrenheit scale is 1000kJ/hper°F_.
Explanation of Solution
Write the expression of conversion relation between K to °F.
ΔT(°F)=ΔT(K)×1.8 (II)
Conclusion:
Substitute 1800kJ/hper°C for ΔT(K) in Equation (II).
ΔT(°F)=(1800kJ/hper°C)×1.8=1000kJ/hper°F
Thus, the rate of heat loss from a house is 1800kJ/hper°C express in Fahrenheit scale is 1000kJ/hper°F_.
(c)
Expert Solution
To determine
The rate of heat loss from a house is 1800kJ/hper°C express in Rankine scale.
Answer to Problem 94RP
The rate of heat loss from a house is 1800kJ/hper°C in Rankine scale is 1000kJ/hperR_.
Explanation of Solution
Write the expression of conversion relation between K to R.
ΔT(R)=ΔT(K)×1.8 (III)
Conclusion:
Substitute 3K for ΔT(K) in Equation (III).
ΔT(R)=1800kJ/hper°C×1.8=1800kJ/hperR
Thus, the rate of heat loss from a house is 1800kJ/hper°C express in Rankine scale is 1000kJ/hperR_.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
During a heating process, the temperature of a system risesby 100C. Express this rise in temperature in K, F and R.
The temperature of a system rises by 130°C during a heating process. Express this rise in temperature in kelvins.
A cup of coffee cools down by transferring heat to the surroundings at a rate of 1 kW. If the mass of the coffee is 0.2 kg and coffee can be modeled as water, determine the rate of change of temperature (dT'/dt) of coffee.
Part A
Express the rate in kelvins per second to two significant figures.
vec
?
dT' .
dt
K/s
Machine Elements in Mechanical Design (6th Edition) (What's New in Trades & Technology)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
First Law of Thermodynamics, Basic Introduction - Internal Energy, Heat and Work - Chemistry; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=NyOYW07-L5g;License: Standard youtube license