Solar & Heat assisted Passive Heat Recovery Ventilation with and Moisture Extraction (SHAP HRV) for existing and new buildings

随着新建筑按照更高的能源标准建造并变得密闭，自然通风手段消失了。为了克服这个问题，使用机械通风。如果没有热回收，这将导致一个典型家庭每年损失高达5000千瓦时的热量。为了“回收”这些能量，增加了热回收，一些型号声称效率为90%。由于两个风扇全天24小时运转，该系统每年的用电量高达900千瓦时（是一台新冰箱的三倍）。在使用燃气供暖的情况下，机械热回收通风提供很少或没有净二氧化碳节约。除了能源消耗之外，机械系统由于其复杂性而具有很高的安装成本，需要许多行业来安装和维护，并且遭受组件故障的困扰，增加了平均每年100英镑的运行成本。机械系统也依赖于一些电子和机械部件，导致缺乏可靠性，资源枯竭和电子浪费。从我们创新和改造的特定被动式热回收通风装置开始（最初是在TSB资助的可行性研究的帮助下开发的，并利用被动式烟囱效应和风辅助），我们为潮湿的房间设计了一个可靠的通风系统，该系统结合了一些关于被动式抽气增强、抽气周期延长、吸湿和简化安装的发明。拟议的系统（SHAP HRV）既克服了湿室安装的许多挑战（例如缺乏烟囱和可靠的空气抽气率），又使产品适用于温暖的气候，大大增加了其出口潜力。这项技术的发展也将使我们能够提供一个绿色交易就绪的全屋系统（使用已经开发的可居住房间的phrv和湿室的SHAP hrv），这是BRE和LABC共同提出的建议。

As new buildings are built to higher energy standards and become airtight, natural means ofventilation disappear. To overcome this, Mechanical Ventilation is used. Without HeatRecovery, this leads to up to 5,000 kWh of heat loss from a typical home per year. In order to‘reclaim’ this energy, Heat Recovery is added, with some models claiming 90% efficiency.With two fans running, 24h a day, the system uses up to 900kWh of electricity per year (threetimes more than a new fridge). In cases where gas heating is used Mechanical Heat RecoveryVentilation provides very little or no net CO2 saving.Besides the energy use, mechanical systems have high installation costs due to theircomplexity, require a number of trades to install and maintain, and suffer from componentfailures adding to the running costs which already average £100 per year. Mechanical systemsalso depend on a number of electronic and mechanical components contributing to lack ofreliability, resource depletion and electronic waste.Starting off with our innovative and retrofit specific Passive Heat Recovery Ventilation Unit(initially developed with the help of TSB funded feasibility study and utilising passive stackeffect and wind assistance), we have designed a reliable ventilation system for wet roomswhich incorporates a number of inventions around passive extraction boost, extraction periodextension, moisture withdrawal and simplified installation.The proposed system (SHAP HRV) both overcomes a number of challenges of wet roominstallations (such as lack of chimneys and dependable air extraction rates) and makes theproduct applicable to warmer climates, greatly increasing its export potential. Thedevelopment of this technology will also allow us to provide a Green Deal ready full housesystem (using already developed PHRVUs for habitable rooms and SHAP HRVs for wetrooms), a proposition proffered by both BRE and LABC.