Drain-water heat recovery system for residential housing

住宅建筑将其总能源的20%用于加热水。使用排水热回收（DWHR）装置可以回收大部分能量来预热家庭使用的热水，这代表了节约能源和热水成本的巨大机会。兰开斯特住宅公司开发了一种新型的DWHR设计，它比目前的技术表现出更好的性能，并有望大大提高新建住宅的能源效率。目前可用的DWHR技术仅在高热水使用量期间表现良好，这种新技术不仅可以在高使用量期间更好地回收热量，还可以在零星和延迟的热水使用期间有效地回收热量。该项目的第一部分需要通过实验原型开发和基本的硅热力学建模来开发，优化和测试这个新的DWHR系统。该项目的第二部分是设计和实施一种新的基于压差的电子泄漏检测系统，以使DWHR技术更接近商业化。

Residential building use about 20% of their total energy on heating water. The use of a drain water heat recovery (DWHR) unit canrecover a large portion of this energy to pre-heat hot water for use in the home, representing a large opportunity for savings in bothenergy and hot-water costs. Lancaster homes has developed a novel DWHR design that has shown better performance thancurrent technology, and has promise to vastly improve the energy efficiency of new-construction residential homes. The currentlyavailable DWHR technology only performs well during periods of high hot water usage, where this new technology allows not onlybetter heat recovery during times of high usage, but also efficient heat recovery during sporadic and delayed hot water usageperiods. Part 1 of the project entails the development, optimization, and testing of this new DWHR system through experimentalprototype development and fundamental in silico thermodynamics modelling. Part 2 of this project, to move the DWHR technologycloser to commercialization, is the design and implementation of a new electronic leak-detection system based on pressuredifferentials that is in accordance with regulations.