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Solve the following problems: 1. The surface of a central heating radiator is at 47°C (320 K) and it is found to radiate 500 W of heat. If its temperature is increased to 57°C, what will the radiant heat? 2 During a warm day a walker loses 1.5 kg of perspiration by evaporation. Given that the latent heat of vaporization is 2.25 MJ/kg, calculate how much thermal energy is required to achieve this. (1MJ = 1 x 10ª J).

Solve the following problems: 1. The surface of a central heating radiator is at 47°C (320 K) and it is found to radiate 500 W of heat. If its temperature is increased to 57°C, what will the radiant heat? 2 During a warm day a walker loses 1.5 kg of perspiration by evaporation. Given that the latent heat of vaporization is 2.25 MJ/kg, calculate how much thermal energy is required to achieve this. (1MJ = 1 x 10ª J).

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Solve the following problems: 1. The surface of a central heating radiator is at 47°C (320 K) and it is found to radiate 500 W of heat. If its temperature is increased to 57°C, what will the radiant heat? 2. During a warm day a walker loses 1.5 kg of perspiration by evaporation. Given that the latent heat of vaporization is 2.25 MJ/kg, calculate how much thermal energy is required to achieve this. (1MJ = 1 x 10ª J).
Transcribed Image Text:Solve the following problems: 1. The surface of a central heating radiator is at 47°C (320 K) and it is found to radiate 500 W of heat. If its temperature is increased to 57°C, what will the radiant heat? 2. During a warm day a walker loses 1.5 kg of perspiration by evaporation. Given that the latent heat of vaporization is 2.25 MJ/kg, calculate how much thermal energy is required to achieve this. (1MJ = 1 x 10ª J).
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