一、前言热管是一种具有高导热性能的传热元件,用它来组成各种规格换热量的热管换热器,可广泛应用于工业锅炉、高炉热风炉、轧钢加热炉、锻造炉、热处理炉、隧道窑和干燥窑等工业炉窑的中低温烟气余热回收,用以预热炉窑燃料燃烧所需要的助燃空气、煤气或水等,以提高炉子的热效率和燃料利用率,降低能耗、降低成本、提高炉子的生产率。这是企业节能工作的有效手段之一。 85年以来,我们就对重力式热管及热管换热器进行了研究和设计工作,87年11月,重力式碳钢—水热管换热器通过了省级技术鉴定。研制成功后的碳钢—水热管换热器曾先后在工业锅炉、高炉热风炉、加热炉、热处理炉和化工炉等多种炉窑上推广应用,取得了较大的经济效益和社会效益。本文将着重 I. Introduction Heat pipe is a kind of heat transfer element with high thermal conductivity, which can be used to form heat pipe heat exchanger with various specifications of heat exchange. It can be widely used in industrial boilers, blast furnace stoves, rolling furnaces, forging furnaces, Heat treatment furnace, tunnel kiln and kiln and other industrial furnace kiln waste heat recovery of low-temperature flue gas, used to preheat the kiln fuel combustion needed combustion air, gas or water, etc., in order to improve the thermal efficiency of the furnace and fuel utilization, reduce Energy consumption, reduce costs, improve furnace productivity. This is one of the effective means of energy-saving work. For 85 years, we have conducted research and design work on gravity heat pipe and heat pipe heat exchanger. In November of 1987, the gravity type carbon steel-water heat pipe heat exchanger passed the provincial technical appraisal. The successful development of carbon steel - water heat pipe heat exchanger has successively in the industrial boilers, blast furnace stove, furnace, heat treatment furnace and chemical furnace and other furnaces to promote the use of and achieved greater economic and social benefits. This article will focus