Archivos de heat exchange

Heat exchangers in the energy industry

July 10, 2023February 1, 2023 by Oficina Tècnica

ENERGY INDUSTRY HEAT EXCHANGERS FOR ENERGY OPTIMIZATION Heat exchangers are a very important product in the optimization of energy transformation processes, whether in thermal power plants, nuclear power plants or hydroelectric power plants, among others. Let’s dive deeper into the uniqueness of each of these systems below: 1. In thermal power plants, heat exchangers are used to transfer heat generated by fossil fuels such as coal, oil or gas to a fluid such as superheated water or steam. This fluid reaches high pressures and drives a turbine that generates electricity. As the fluid drives the turbine, it cools and we condense it using a new heat exchanger we call a condenser. Once condensed, we reuse the fluid to heat it with fossil combustion and generate energy again. In thermal power plants we could find cogeneration plants which, in addition to producing heat, generate electricity, as well as trigeneration plants, which, in addition to producing heat and electricity, generate refrigeration energy, which means greater energy efficiency and sustainability. 2. In nuclear power plants, heat exchangers are essential to control the temperature of the reactor with the help of a coolant. The heat transfer fluid absorbs the heat and transmits it to a steam generator which will convert the energy into electricity. This coolant, once cooled, will return to the start to start the process over. Beyond this aspect of operation, heat exchangers are also used as a preventive measure in diesel engines with the aim of controlling a possible electrical shutdown. There are many other models of energy generation, all with very particular singularities that we will analyze in other articles. Beyond the explanatory brushstrokes we have made, all projects require in-depth analysis and a highly experienced professional team. If you have any needs, contact us, we are at your disposal.

Heat exchanger to produce ice

July 5, 2023October 3, 2022 by Oficina Tècnica

HEAT EXCHANGER TO PRODUCE ICE AND SAVE ENERGY SMART ENERGY SAVING SYSTEM Some production processes and large conditioning systems require significant amounts of cold. Traditionally, this implies the need to install high-power refrigeration equipment with the consequent purchase cost, energy cost and maintenance cost. The I-SNAKE heat exchanger produces and stores ice crowns around it during the hours of least energy demand, for example at night. This allows that, during the operational hours, generally the daytime slots where the energy cost is more expensive, we have an important source of additional cooling, produced at a low cost and, therefore, we can achieve the same performance with machines of lower energy capacity. Among the products that can be especially interesting for this application we find: 1. Pillow plate heat exschanger. 2. Smooth tubes heat exchanger. 3. Cooling jacket. 4. Ice producer.

Conduction, convection & radiation

July 5, 2023February 1, 2022 by Oficina Tècnica

THERMODYNAMICS CONDUCTION, CONVECTION & RADIATION Observing nature we can internalize technical concepts such as the forms of heat exchange; radiation, convection and conduction. For example, if we jump in time and imagine ourselves soaking on the beach in summer, notice that the mornings are usually serene, without wind. This is due to the thermal equilibrium that exists between the temperature of the air mass over the sea and the temperature of the air mass over the land. As the hours pass, the Sun heats the air masses. But the radiant energy or radiation from the Sun heats the land surface faster than that of water, and the balance between the two masses is upset. In areas such as the Mediterranean, usually around the afternoon we find a mass of hot air over the land and a mass of cold air over the sea. The mass of hot air over the land, exactly as we see in hot air balloons, tends to rise and the space it releases is covered by the mass of cold air that was over the sea and will flow towards the land. This air circulation is the transmission of heat by convection. The more the Sun heats up, the faster this thermal difference between the air mass over the land and over the sea is produced, and the winds that we perceive will be more abrupt. In addition, this rising air tends to form small cumulus clouds or, if the temperature difference is greater and the air rises higher, we even see cumulonimbus clouds. Just as radiation does not require contact with the heat source, convection is based on the circulation of fluids such as air masses, conduction would be when two objects at different temperatures are in contact, for example, our bare feet walking at noon through the sand. So, when you’re on the beach and at noon the sea wind starts to blow a bit, think of BOIXAC. Specialists in heat exchange for industry.