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RESIDENTIAL DRAIN WATER HEAT RECOVERY SYSTEMS: MODELING, ANALYSIS, AND IMPLEMENTATION

Journal of Green Building 2010年第3期5卷 85-94页

作者： Scott Bartkowiak Ryan Fisk Andrew Funk Jonathan Hair steven J.skerlos Mechanical Engineering University of Michigan Tecat Engineering Inc.Ann ArborMI Mechanical Engineering Oakland University Bolton Conductive Systems Walled LakeMI

This paper describes the design and environmental improvements that can be achieved using drain water heat recovery systems(DWHR)to reduce the energy consumption associated with residential *** systems transfer heat from hot drain water to the shower’s incoming cold water stream,thus reducing the demand on the hot water *** are various DWHR systems available that differ in heat exchanger type,cost,and *** article focuses on designing a flat plate and gravity fed heat exchangers for a range of residential showering *** is useful since there currently is no peer-reviewed published data on the effectiveness of DWHR,nor is there published research considering the emissions reductions that can be achieved with realistic DWHR *** governing equations for heat exchangers are used to model empirical data and to derive implementation recommendations for DWHR *** model is validated using a prototype flat plate heat exchanger and test stand under varying flow rates and temperatures.A Monte Carlo simulation of the results showed that DWHR could save an average$74 a year for homes with natural gas water heaters and$160 a year for homes with electric water *** corresponds to 0.3 metric tons and 1.5 metric tons of CO_(2) offset per home per year for natural gas and electric water heaters,*** results are compiled and organized into a software program that allows consumers to input their household showering habits and location to get an estimate of their CO_(2),energy,and cost savings to determine if they should install a DWHR system.

关键词： install drain cost

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AWARE@HOME:A CASE STUDY IN TECHNOLOGICAL DESIGN TO PROMOTE ENVIRONMENTAL CONSERVATION IN THE AMERICAN HOME

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Journal of Green Building 2006年第4期1卷 112-128页

作者： Andres Clarens Antonio Vittorini Brad Lamiman Konstantinos Boukouris John Pariseau Prashanth Pandian steven skerlos 不详 Department of Mechanical Engineering The University of Michigan at Ann Arbor

This paper describes an inexpensive technology called AWARE@home that was designed for households to receive information regarding their utility consumption patterns through at-home wireless *** information devices have been proposed or developed in the past but to the authors’knowledge this is the first to be:1)designed specifically for homeowners to facilitate choices regarding consumption 2)built on existing home wireless“WiFi”networks and 3)developed with retrofit sensors that do not require meter *** that AWARE@home is designed to empower consumers to save money and conserve resources,the technology was selected as a winner of the inaugural EPA P3 competition in *** system is designed for minimal effort by consumers:first,a service professional installs the AWARE@home retrofit device onto the existing meters in a process that takes approximately 30 *** the consumer receives a startup kit that includes a CD and,if needed,a USB wireless antenna for the *** loading software from the CD onto the computer,the homeowner is asked basic questions about utility rates,billing cycles and how much he or she wants to spend on utilities each *** any point in the month that the desired expenditure on utilities set by the consumer is likely to be exceeded,AWARE@home will send an e-mail message or pop-up window message providing a warning about this predicted over-spending on *** paper describes the prototype AWARE@home system that was produced for the EPA P3 competition and later installed in the home of an author for further *** AWARE@home prototype meets a number of design specifications related to simplicity,reliability,and *** includes both hardware and software components for“Wi-Fi”monitoring and alerting of home water,gas,and electricity *** prototype for electricity monitoring has been operating continuously for over eight months at a home in Ann Arbor,Michigan,it has consistentl

关键词： energy efficiency household consumption environmental footprint

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