Thermal storage material for water tank of solar water heater and preparation method of thermal storage material

Abstract

The invention discloses a thermal storage material for a water tank of a solar water heater and a preparation method of the thermal storage material. The thermal storage material is prepared from the following components in parts by weight: 30 to 45 parts of glycol distearate, 15 to 25 parts of diphenyl methane diisocyanate, 12 to 20 parts of high density polyethylene, 14 to 26 parts of sodium sulfate decahydrate, 8 to 15 parts of polyethylene glycol, 8 to 12 parts of stearic acid, 6 to 10 parts of silicon dioxide, 5 to 10 parts of a paraffin mixture, 1 to 5 parts of calcium oxide, 2 to 6 parts of magnesium oxide, 1 to 2 parts of carboxymethyl cellulose and 1 to 2 parts of magnesium chloride hexahydrate. By adding glycol distearate, diphenyl methane diisocyanate and the like, the thermal energy storage temperature range of the water tank is widened; and by adding high-density polyethylene, the paraffin mixture, sodium sulfate decahydrate and the like as base materials, the thermal storage material has the advantages of being excellent in thermal stability and heat storage effects, improving solar energy utilization rate, prolonging the service life of solar energy, and being good in application prospect and worth of being popularized.

Description

technical field [0001] The invention relates to the technical field of solar heat storage, in particular to a heat storage material for a water tank of a solar water heater. Background technique [0002] A solar water heater is a heating device that converts sunlight energy into heat energy, and heats water from low temperature to high temperature, so as to meet the hot water use in people's life and production. Solar water heaters are divided into vacuum tube solar water heaters and flat plate solar water heaters according to their structure. The vacuum tube solar water heaters are the main ones, accounting for 95% of the domestic market share. Vacuum tube household solar water heaters are composed of heat collecting tubes, water storage tanks, brackets and other related parts. The conversion of solar energy into heat mainly depends on vacuum heat collecting tubes. Get the hot water you need. [0003] Solar heat storage materials are a relatively core part of the entire s...

AI Technical Summary

Problems solved by technology

[0003] Solar heat storage materials are a relatively core part of the entire solar light-to-heat conversion, but the existing heat storage and heat storage materials are not particularly effective, resulting in low thermal energy utilization and low light-to-heat conversion efficiency.