Thermal Moisture Enhanced Gradient Strata (TMEGS) for Heat Exchangers optimizes the performance of energy flows for building heating, cooling, hot water, and industrial processes. TMEGS are temperature and moisture control layers which reduce the cost of closed loop ground heat exchangers and increase heat exchanger performance by improving energy transfer between solar, geothermal, process heat and renewable energy exchangers. Circuit optimized thermally active building structures (COTABS) configure heat exchangers and thermal energy strata for application specific requirements. TMEGS integrated with COTABS is a scalable and interoperable carbon-free, planet friendly architecture for net zero energy buildings. Embodiments include the use of recycled materials, waste tire derived aggregate, nanofluids, phase change materials, cathodic protection, and integrated microprocessor and client-server controls.

The invention relates to a heat exchanger of the brazed plate and fin type including a stack of plates arranged parallel to one another and to a longitudinal direction so as to define, between the plates, a plurality of passages suitable for the flow of at least a first fluid in the longitudinal direction, at least one exchange structure of corrugated shape being arranged between two successive plates and having corrugation crests and corrugation troughs connected alternately by a succession of fins. The fins succeeding one another in a lateral direction which is orthogonal to the longitudinal direction and which defines a direction of corrugation of the exchange structure, and the corrugation crests and troughs being arranged against the plates and having a thickness measured parallel to a direction of stacking which is perpendicular to the longitudinal direction and to the lateral direction.

A method and system for predicting heat exchanger performance, an electronic device and a storage medium are provided. The method comprises: acquiring a flow unit of the heat exchanger and constructing a physical model of the flow unit according to structural parameters of the heat exchanger; constructing a coupled model of an interphase transfer mechanism for oil-gas-water three-phase flow using computational fluid dynamics according to the physical model; constructing a fully coupled population balance model for flow and heat transfer of oil-gas-water three-phase flow; solving the fully coupled population balance model to obtain a model calculation result and determining a Nusselt number and a Fanning friction factor; and determining a comprehensive heat transfer factor, wherein the comprehensive heat transfer factor is used to evaluate heat transfer performance of the heat exchanger.

Device and method for ascertaining fouling in a heat exchanger in which heat is transferred from a first medium to a second medium through a wall, wherein a function is used with at least one parameter that describes the dependence of a first variable, which is influenced by the fouling, on the flow and/or temperature of the first medium and/or the second medium, in particular the simultaneous influence of changes in the flow and temperature on the first variable, wherein a value for the at least one parameter is ascertained using measurement values of the first and/or the second medium such that the precision when ascertaining fouling in a heat exchanger, in which heat is transferred from a first medium to a second medium, is increased.

A device and method of predicting the failure of a heat exchanger of a heating device for a pool or spa are provided. The method comprises providing a measurement device to determine a baseline concentration of a metal within the water of the pool or the spa at a first time. The method further comprises measuring a concentration of the metal via the measurement device at a second time to define a measured concentration and determine if the measured concentration is greater than the baseline concentration. The method also comprises providing an alert when the measured concentration exceeds the baseline concentration by more than a predetermined amount. The metal detected by the measurement device may be at least one of copper, stainless steel, or titanium.

A cold plate apparatus includes walls that surround an active volume adjacent to an inlet plenum; the walls include an inlet opening at one end of a top side of the inlet plenum and a plenum opening between the inlet plenum and the active volume. Also included is a blocker that partially separates the inlet plenum from the active volume. The blocker is structurally configured to preferentially redirect flow from the inlet plenum into the active volume.

A computer-implemented method, environmental control system (ECS) for an aircraft, and system are provided. Air temperatures at the inlet and outlet of a ram air duct for an ECS are measured. Also, air temperatures at outlets from one or more heat exchangers arranged in the ram air duct are measured. The temperatures are typically measured when the aircraft is on the ground and when aircraft engines supplying air to the ECS are operating at idle. Shortly thereafter, the heat exchangers are manually inspected to determine a level of actual fouling (e.g., dirt, dust, or other debris accumulated on heat exchanger surfaces). A supervised machine learning or other statistical analysis is performed on the measured temperatures and associated actual fouling levels to develop a model that predicts an amount of heat exchanger fouling, based on the temperature measurements. An alert can be output if the predicted fouling exceeds a fouling threshold.

The above mentioned invention describes a process for cooling a gas mixture of SO.sub.2 and/or SO.sub.3 and water, wherein the gas mixture is cooled by means of a first heat exchanger carrying a coolant. The temperature of the coolant lies above the dew point of the gas or gas mixture.

A method of controlling cooling water treatment may involve measuring operating data of one or more downstream heat exchangers that receive cooling water from the cooling tower. For example, the inlet and outlet temperatures of both the hot and cold streams of a downstream heat exchanger may be measured. Data from the streams passing through the heat exchanger may be used to determine a heat transfer efficiency for the heat exchanger. The heat transfer efficiency can be trended over a period of time and changes in the trend detected to identify cooling water fouling issues. Multiple potential causes of the perceived fouling issues can be evaluated to determine a predicted cause. A chemical additive selected to reduce, eliminate, or otherwise control the cooling water fouling can be controlled based on the predicted cause of the fouling.

A plate fin fluid processing device includes active layers, where each active layer includes a fin plate sandwiched between parting sheets so that an active fluid space is defined between the parting sheets. The active layers include an outermost active layer having an inlet and an outlet. A contingent layer body is positioned adjacent to the outermost active layer and includes a fin plate positioned between a parting sheet and a cap sheet. The contingent layer body has a fluid space that is sealed with respect to the atmosphere. A pressure monitoring system is in communication with the fluid space of the contingent layer body. An emergency pressure relief device is configured to release a pressure within the fluid space if a preset pressure is exceeded.