Методичні основи оцінки ресурсів (запасів) родовища підземних вод (геотермальної енергії) для забезпечення роботи теплонасосної станції систем теплопостачання

• Дата: 2019
• Автор: Bilodid V.D.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: General Energy Institute of the National Academy of Sciences of Ukraine 2019
• Теми: оцінка ресурсів (запасів) теплоти; підземні води; джерело низькотемпературної теплоти; теплонасосна станція.
• Онлайн доступ: https://systemre.org/index.php/journal/article/view/702
• Назва журналу: System Research in Energy

We present results of investigations concerning the methodical bases of estimation of the resources and reserves of underground geothermal heat contained in permeable collectors with underground waters, including thermal, for a specific site (field), as sources of low-potential heat (SLPH) for the operation of heat-pump stations (HPS) of high power in centralized heat supply systems. The methodology presupposes the presence of characteristics of the deposit (aquifer), obtained as a result of drilling wells or given by analogy with known similar characteristic deposits. The methodology is based on the main well-known technologies for the extraction of fluids from the depths, including the application of technology of geothermal circulation systems.The article shows how one can determine the need for heat supplies to ensure the work of HPS over a predetermined period of operation and estimate the resources (reserves) of the field with regard for the possibilities of technology for extracting this heat.On individual examples, we developed estimates of the resource capabilities of underground layers containing water of various types as SLPH for HPS. It was established that territories with an elevated geothermal gradient are more reasonable for the placement of high capacity HPS. The heat removal for HPS at different conditions of the attitude of beds is projected to be 14–135 times as great as the level of natural heat flow from the Earth depths, which means the processes of intensive cooling of the heat-removal zone.In addition, large areas that can be occupied by SLPH fields at relatively low temperatures of fluids from productive horizons impose restrictions on the power of HPS. Powerful HPS should be oriented on deeper wells (1–2 km), i.e., they should have highly permeable collectors (layers) with low-temperature thermal waters (with a temperature of over 30–40 °C).Plates with artesian waters will expediently be used as SLPH for HPS with relatively low power(1–3 MW).The use of this methodology provides obtaining estimates for the possible use of resources in order to construct an HPS of a given power.