Warning: foreach() argument must be of type array|object, bool given in /var/www/html/web/app/themes/studypress-core-theme/template-parts/header/mobile-offcanvas.php on line 20

On average, superinsulated homes use just 15 percent of the fuel required to heat the same size conventional home built before the energy crisis in the 1970 s. Write an essay on superinsulated homes, and identify the features that make them so energy efficient as well as the problems associated with them. Do you think superinsulated homes will be economically attractive in your area?

Short Answer

Expert verified
Evaluate the economic attractiveness of superinsulated homes in your area. Answer: The main features that make superinsulated homes energy-efficient include increased insulation levels in the walls, roof, and floor; airtight construction; triple-glazed windows with low-emissivity coatings; energy-efficient HVAC systems; and the use of solar or renewable energy sources. Possible associated problems include higher upfront construction costs, potential indoor air quality issues, difficulty finding skilled contractors, and aesthetic and architectural considerations. The economic attractiveness of superinsulated homes in my area depends on factors such as local climate, energy costs, potential cost savings, and available incentives for energy-efficient construction. My personal opinion is that superinsulated homes can be a good fit for my area, given the increasing awareness of the importance of energy efficiency and sustainable living.

Step by step solution

01

Introduce superinsulated homes in the essay

Begin the essay by introducing superinsulated homes as an energy-efficient alternative to conventional homes built before the energy crisis in the 1970s. Mention that on average, superinsulated homes use only 15% of the fuel required to heat a conventional home of the same size. Step 2:
02

Describe the features that make superinsulated homes energy-efficient

In this section, describe the features that contribute to the energy-efficiency of superinsulated homes. Some of these features include: - Increased insulation levels in the walls, roof, and floor, which help to reduce heat loss. - Airtight construction to minimize drafts and infiltration of outdoor air. - Triple-glazed windows with low-emissivity coatings, which help to reduce heat loss through the windows. - Installation of energy-efficient heating, ventilation, and air-conditioning (HVAC) systems. - Use of solar energy or other renewable energy sources to supplement traditional heating and cooling systems. Step 3:
03

Discuss the problems associated with superinsulated homes

In this section, discuss the challenges or problems that homeowners might face with a superinsulated home. Some of these problems include: - Higher upfront construction costs, as the energy-efficient materials and systems used in superinsulated homes can be more expensive than those in conventional homes. - Potential issues with indoor air quality, as the airtight construction of superinsulated homes can lead to the build-up of moisture, odors, and indoor air pollutants if not properly managed through ventilation. - Possible difficulty in finding contractors skilled in the design and construction of superinsulated homes, as this type of construction may be less common in some areas. - Aesthetics and architectural considerations, as superinsulated homes may differ in appearance from conventional homes due to their unique design requirements. Step 4:
04

Evaluate the economic attractiveness of superinsulated homes in the student's area

In this section, discuss whether superinsulated homes would be economically attractive in the student's area. Consider factors such as the local climate, energy costs, potential cost savings from reduced fuel use, and any available incentives or rebates for energy-efficient construction. Conclude this section with the student's personal opinion on whether they believe superinsulated homes would be a good fit for their area.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

A \(0.55\)-m-internal-diameter spherical tank made of 1 -cm-thick stainless steel \((k=15 \mathrm{~W} / \mathrm{m} \cdot \mathrm{K})\) is used to store iced water at \(0^{\circ} \mathrm{C}\). The tank is located outdoors at $30^{\circ} \mathrm{C}\( and is subjected to winds at \)8 \mathrm{~km} / \mathrm{h}$. Assuming the entire steel tank to be at \(0^{\circ} \mathrm{C}\) and thus its thermal resistance to be negligible, determine \((a)\) the rate of heat transfer to the iced water in the tank and (b) the amount of ice at $0^{\circ} \mathrm{C}\( that melts during a \)24-\mathrm{h}$ period. The heat of fusion of water at atmospheric pressure is \(h_{i f}=333.7 \mathrm{~kJ} / \mathrm{kg}\). Disregard any heat transfer by radiation.

Ambient air at \(20^{\circ} \mathrm{C}\) flows over a 30 -cm-diameter hot spherical object with a velocity of \(4.2 \mathrm{~m} / \mathrm{s}\). If the average surface temperature of the object is \(200^{\circ} \mathrm{C}\), the average convection heat transfer coefficient during this process is (a) \(8.6 \mathrm{~W} / \mathrm{m} \cdot \mathrm{K}\) (b) \(15.7 \mathrm{~W} / \mathrm{m} \cdot \mathrm{K}\) (c) \(18.6 \mathrm{~W} / \mathrm{m} \cdot \mathrm{K}\) (d) \(21.0 \mathrm{~W} / \mathrm{m} \cdot \mathrm{K}\) (e) \(32.4 \mathrm{~W} / \mathrm{m} \cdot \mathrm{K}\) (For air, use $k=0.2514 \mathrm{~W} / \mathrm{m} \cdot \mathrm{K}, \operatorname{Pr}=0.7309, \nu=1.516 \times\( \)\left.10^{-5} \mathrm{~m}^{2} / \mathrm{s}, \mu_{\infty}=1.825 \times 10^{-5} \mathrm{~kg} / \mathrm{m} \cdot \mathrm{s}, \mu_{s}=2.577 \times 10^{-5} \mathrm{~kg} / \mathrm{m} \cdot \mathrm{s}\right)$

The outer surface of an engine is situated in a place where oil leakage can occur. When leaked oil comes in contact with a hot surface that has a temperature above its autoignition temperature, the oil can ignite spontaneously. Consider an engine cover that is made of a stainless steel plate with a thickness of \(1 \mathrm{~cm}\) and a thermal conductivity of $14 \mathrm{~W} / \mathrm{m} \cdot \mathrm{K}$. The inner surface of the engine cover is exposed to hot air with a convection heat transfer coefficient of $7 \mathrm{~W} / \mathrm{m}^{2} \cdot \mathrm{K}$ at a temperature of \(333^{\circ} \mathrm{C}\). The engine outer surface is cooled by air blowing in parallel over the \(2-\mathrm{m}\)-long surface at $7.1 \mathrm{~m} / \mathrm{s}\(, in an environment where the ambient air is at \)60^{\circ} \mathrm{C}$. To prevent fire hazard in the event of an oil leak on the engine cover, a layer of thermal barrier coating \((\mathrm{TBC})\) with a thermal conductivity of \(1.1 \mathrm{~W} / \mathrm{m} \cdot \mathrm{K}\) is applied on the engine cover outer surface. Would a TBC layer with a thickness of $4 \mathrm{~mm}\( in conjunction with \)7.1 \mathrm{~m} / \mathrm{s}$ air cooling be sufficient to keep the engine cover surface from going above $180^{\circ} \mathrm{C}$ to prevent fire hazard? Evaluate the air properties at \(120^{\circ} \mathrm{C}\).

Kitchen water at \(10^{\circ} \mathrm{C}\) flows over a 10 -cm-diameter pipe with a velocity of \(1.1 \mathrm{~m} / \mathrm{s}\). Geothermal water enters the pipe at \(90^{\circ} \mathrm{C}\) at a rate of \(1.25 \mathrm{~kg} / \mathrm{s}\). For calculation purposes, the surface temperature of the pipe may be assumed to be \(70^{\circ} \mathrm{C}\). If the geothermal water is to leave the pipe at \(50^{\circ} \mathrm{C}\), the required length of the pipe is (a) $1.1 \mathrm{~m}$ (b) \(1.8 \mathrm{~m}\) (c) \(2.9 \mathrm{~m}\) (d) \(4.3 \mathrm{~m}\) (e) \(7.6 \mathrm{~m}\) (For both water streams, use $k=0.631 \mathrm{~W} / \mathrm{m} \cdot \mathrm{K}, \operatorname{Pr}=4.32\(, \)\left.\nu=0.658 \times 10^{-6} \mathrm{~m}^{2} / \mathrm{s}, c_{p}=4179 \mathrm{~J} / \mathrm{kg} \cdot \mathrm{K}\right)$

The local atmospheric pressure in Denver, Colorado (elevation $1610 \mathrm{~m}\( ), is \)83.4 \mathrm{kPa}$. Air at this pressure and at \(30^{\circ} \mathrm{C}\) flows with a velocity of \(6 \mathrm{~m} / \mathrm{s}\) over a \(2.5-\mathrm{m} \times 8-\mathrm{m}\) flat plate whose temperature is \(120^{\circ} \mathrm{C}\). Determine the rate of heat transfer from the plate if the air flows parallel to the \((a) 8-\mathrm{m}-\) long side and \((b)\) the \(2.5\)-m side.

See all solutions

Recommended explanations on Physics Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free