Industrial cooling system to control the water temperature of the process using a hybrid of air-cooled and water-cooled phases

Abstract

The invention is an industrial cooling system to control the temperature of the water coming back from the process using a hybrid of air-cooled and water-cooled phases related to the cooling systems, including heat exchangers to reduce and control the temperature of the fluids. This invention is also a hybrid system of air-cooled and water-cooled heat exchangers and heat exchangers immersed in water, and features intelligent control of the fluids entering the process reactors. The invention is a type of cooling tower based on heat exchanges between the hot fluid and ambient air as a cooling fluid and also heat transfer from hot fluid passageways with cooler fluids such as water or cooled air with the help of water. The fluid enters a round trip cycle by entering the tube network and finned tubes of the main heat exchanger.

What is claimed is: 
     
         1 . The invention of industrial cooling system to control the water temperature of the process using hybrid of air cooled and water cooled phases which contains at least one heat exchanger equipped with triple axial fans and at least one zoned water spraying system and at least one water-cooled and air-cooled middle coil and at least one section to prevent freezing of cooling water in the floor section of the equipment and at least one coil in the cooling water freezing prevention section and at least one electric valve for each section to control the water flow of the process and cooling water and also at least one bypass system for each process water cooling zone and at least a fan equipped with an inverter and remote control drive from triple axial fans. 
     
     
         2 . The cooling system of  claim 1  which is a type of cooling tower based on the heat exchange between the hot fluid and the ambient air as a cooling fluid, as well as heat transfer from the passageways of the hot fluid with cooler fluids such as water or air cooled with the help of water. 
     
     
         3 . The cooling system of  claim 1  in which the existence of axial fans in the upper part of the finned tubes of the main heat exchanger causes that, if necessary, by turning on each fan and adding these fans to the system, the air flow from the lower part of the heat exchanger to the upper part is increased and if there is a need to increase the cooling efficiency, the following fans are also turned on and help to increase the flow rate of passing air. 
     
     
         4 . The cooling system of  claim 1  in which the presence of a set of zoned water spray nozzles can spray water in sequence. 
     
     
         5 . The cooling system of  claim 1  in which the entrance of fine water particles into the air passing through the heat exchanger section through the upward air flow created by the axial fans has causes to increase the cooling efficiency due to the increase in the relative humidity of the passing air and also the drop in the temperature of the air fluid and totally the temperature of the passing fluid will show a further decrease. 
     
     
         6 . The cooling system of  claim 1  in which the existed nozzles make it possible to add fine water particles to the cooling air and cause evaporation on the surface of the middle layer tubes. 
     
     
         7 . The cooling system of  claim 1  in which the existing fans on the heat exchanger system can also enter the cooling cycle in order and by increasing the number of fans, it will cause a greater temperature drop in the cooling system. 
     
     
         8 . The cooling system of  claim 1  in which the existence of a separate network of tubes equipped with a surface heat exchange system in the lower part of the heat exchanger system makes it possible to use as many spray nozzles on the cooling water coil as possible if heat exchange is needed or by directly pouring water on this coil, the heat exchange between the hot fluid and the cooling water is done in the evaporative form. 
     
     
         9 . The cooling system of  claim 1  in which the middle coil is connected in series to the main tubes of the cooling system. 
     
     
         10 . The cooling system of  claim 1  in which after passing through the main circuit, the hot fluid continues to pass through this network of pipes, which allows the air flow created by axial fans to evaporate and cool these pipes. 
     
     
         11 . The cooling system of  claim 1  in which the existence of a water collecting basin provides the possibility for the used water to drawn down and collect in this basin. 
     
     
         12 . The cooling system of  claim 1  in which the heat exchanging system in the lower basin of the equipment will increase the cooling efficiency and further decrease the temperature of the passing fluid. 
     
     
         13 . The cooling system of  claim 1  in which each of the elements in the said cooling tower is equipped with an electric valve to control the flow or non-flow of cooling water. 
     
     
         14 . The cooling system of  claim 1  in which the presence of thermal sensors, including thermocouples in the processing fluid path as well as the passing air path, provides the possibility that by adjusting the temperature of the cooled processing fluid output on the electronic controller system, the entry of each fan into the circuit, starting the process of the spraying water and humidification of the passing air, entering the water spraying system on the auxiliary cooling coil or passing the fluid flow through the network of cooling pipes on the bottom of the lower basin, respectively and according to the need to increase the cooling efficiency enters the system or exits the system. 
     
     
         15 . The cooling system of  claim 1  in which the intelligent entry or exit of each element into the circuit minimizes the consumption energy. 
     
     
         16 . The cooling system of  claim 1  in which water spraying in this device is non-continuous and only when the temperature needs to decrease further, water spraying enters the circuit as a non-permanent auxiliary factor. 
     
     
         17 . The cooling system of  claim 1  in which heat exchange of the hot fluid inside the closed cycle with the ambient air considered as the first stage of the cooling. 
     
     
         18 . The cooling system of  claim 1  in which heat exchange between the hot fluid inside the closed cycle with the cooled air by humidification method (adiabatic) considered as the second stage of the cooling. 
     
     
         19 . The cooling system of  claim 1  in which heat exchange between the hot fluid inside the closed cycle with the surface evaporation of water from the outer wall of the tubes considered as the third stage of the cooling. 
     
     
         20 . The cooling system of  claim 1  in which heat exchange between the hot fluid inside the closed cycle and the water inside the basin in contact with the outer wall of the submerged pipes in the basin considered as the fourth stage of the cooling. 
     
     
         21 . The cooling system of  claim 1  in which a network of tubes which transfer the heat from hot fluid to the basin water prevent from the basin water to be freeze in the cold time of the day. 
     
     
         22 . The cooling system of  claim 1  in which each of the existing water spraying networks in the cooling package is equipped with an automatic electric valve to control water spraying on different zones of the machine. 
     
     
         23 . The cooling system of  claim 1  in which each of the electromotor of the fans on the device can be turned off and on or remotely controlled.