Designed in accordance with the relevant requirements of GB/T 151-2014 "Heat Exchangers," the plate-fin heat exchanger requires complete parameters for both the hot side and the cold side to be submitted at the selection stage: medium name, inlet and outlet temperatures, volumetric flow rate, allowable pressure drop, working pressure, and working temperature. If any one of these is missing, it becomes difficult to determine the core channel arrangement and fin type, and deviations in outlet temperature or unexpected pressure drops are likely to occur on site. The BRQ-32 plate-fin heat exchanger is suitable for hydraulic oil, compressed air, and water-glycol solutions. During selection, medium compatibility and port orientation can be checked against site conditions.
The first type is providing only hot-side parameters while filling in the cold side with estimated values, resulting in a heat transfer area that does not match the actual load. The second type is neglecting low-load conditions; when the system operates at partial load, flow distribution becomes uneven, flow through some channels is too low, and temperature control accuracy decreases. The third type is inconsistency between port orientation and piping layout, requiring additional elbows after installation and increasing resistance. Providing complete hot-side and cold-side parameters during selection and rechecking flow distribution under low-load system conditions can help avoid these problems in advance.
The core material can be aluminum alloy or stainless steel; design pressure and design temperature are determined according to the order agreement; port types support flanged and threaded connections. Core dimensions and port orientation can be customized, and common voltage and power configurations can be selected according to the user's site conditions. When submitting selection data, operation and maintenance personnel are advised to attach a schematic of the on-site piping route and a description of medium cleanliness to facilitate verification of channel clearance and port specifications.
After the equipment is in place, first verify that the nameplate parameters match the order agreement, then check the port orientation and piping connections. Observe changes in inlet and outlet pressure drop during initial operation; if the pressure drop rises quickly, check medium filtration. Recheck flow distribution during low-load operation and record outlet temperatures under each condition to provide a basis for subsequent adjustments.
