1. Overview

1. The volumetric heat exchanger features a large temperature drop of the heat medium. For steam-water heat exchange, the outlet temperature of condensed water is around 50℃, and steam traps shall be installed at the upper and lower sections of the return pipe for ease of operation and maintenance. For water-water heat exchange, the heat temperature drop is 2~2.5 times that of heat exchangers of the same type; high-temperature hot water at 120~150℃ can be cooled to 70~75℃ after heat exchange.
2. The volumetric heat exchanger delivers excellent heat exchange and heat dissipation performance with low heat loss, realizing good energy efficiency. In the meantime, when steam is adopted as the heat medium, it can recover about 15% of the heat from condensed water, which accounts for the total heat exchange capacity of the equipment.
3. It has a small cold water zone and a high volume utilization rate.
4. It retains the advantages of conventional volumetric heat exchangers, including large water storage capacity, low head loss, safe and stable water supply, and convenient descaling.

1. Quick start-up: Thanks to the special structure of this product, the produced hot water quickly reaches the hot water outlet at the top of the tank, enabling hot water supply without heating most of the cold water in the tank first.
2. Buffer for peak water demand: A large amount of hot water is consumed and cold water is continuously replenished during peak water usage periods. The built-in volume of the semi-volumetric floating coil heat exchanger can buffer the water temperature fluctuation caused by high water consumption during peak periods.
3. High and uniform heating efficiency: Multiple groups of floating coils are built into the heat exchanger with a unique pagoda-type structure, ensuring fast heating speed, uniform temperature rise and constant outlet water temperature. In addition, no stagnant water zone is formed inside the equipment, preventing bacterial growth in the hot water and ensuring clean and hygienic water quality.
4. Dynamic heat transfer: The floating coils generate slight vibration during operation to achieve dynamic heat transfer, and the heat transfer coefficient is about 30% higher than that of conventional straight tube bundle heat exchangers.
5. Anti-scaling performance: The heat exchange tubes adopt a floating coil structure, and the fluid that easily forms turbulence has a strong scouring effect on the tube wall of the heat exchanger, effectively preventing scale formation.

2. Structure

① Shell drain port   ② Tube side drain port or condensed water outlet

 

③ Support leg     ④ Head     ⑤ Cold side water inlet     ⑥ Shell    ⑦ Heat exchange coil    ⑧ Lifting lug   ⑨ Hot side inlet
⑩ Cold side water outlet     ⑪ Hot side water outlet or steam vent   ⑫ Safety valve     ⑬ Thermometer     ⑭ Pressure gauge
⑮ Manhole assembly