TechnicalGraphic | HVAC for High-Humidity Food Processing Environments | PMG Engineering

HVAC for High-Humidity Food Processing Environments

Managing humidity in food processing environments is crucial for product integrity, microbial control, and operational efficiency. Discover 5 advanced HVAC technologies to improve moisture control, energy efficiency, and air quality in food processing settings, including desiccant dehumidification and HEPA-filtered devices, ensuring sustainable, effective, and compliant food factories. At PMG Engineering, we provide expert HVAC design inputs and ensure they are seamlessly incorporated throughout the detailed engineering phase. We focus on coordination, risk management, and quality control, while fostering effective communication between stakeholders. Our approach enhances the overall quality assurance of HVAC system design, helping you upgrade your facility with tailored, efficient HVAC strategies!

HVAC FOR HIGH-HUMIDITY FOOD PROCESSING ENVIRONMENTS 5 I N N O V A T I V E S O L U T I O N S HVAC (Heating, Ventilation, and Air Conditioning) systems are essential for dehumidification to prevent moisture accumulation, reduce microbial growth, and preserve quality Proper designing and optimization of HVAC is necessary to achieve a comfortable working environment while ensuring integrity and safety of food products Correct sizing, dedicated dehumidification units and proper airflow management of HVAC systems are the crucial parameters to consider while designing an HVAC system HVAC (High Ventilation, and Air Conditioning) System Utilize moisture-absorbing materials like silica gel or lithium chloride to extract humidity from the air Ideal for environments with frequent washdowns and high moisture loads WORKING: The humid air pass through desiccant wheel, which soaks up moisture directly from the air leaving dry air that is circulated back into the facility A separate heated air stream (around 120°C) removes and evaporates the collected moisture from the desiccant The wheel continuously rotates, ensuring constant moisture removal and system efficiency 1) Desiccant Dehumidification Systems Supplies filtered, low-velocity air at floor level and removes contaminants at ceiling level Reduces airborne moisture accumulation and prevents condensation on cold surfaces and equipment. Working Filtered, cool air is introduced at floor level at a low velocity Air moves upward as it absorbs heat and moisture, carrying contaminants with it Exhaust vents at the ceiling remove humid, warm, and contaminated air, preventing recirculation A stratified airflow effect is maintained, ensuring minimal turbulence and efficient humidity control 2) Low-Velocity Displacement Ventilation (LVDV) Provide precise temperature and humidity control in high- humidity food processing facilities Allows for simultaneous cooling, heating, and dehumidification across multiple zones WORKING: Humidity-laden air enters the system and passes through the evaporator coil Moisture condenses as the air cools, reducing relative humidity (RH) 3) Variable Refrigerant Flow (VRF) Systems Hot gas reheat coil activates, reheating the dehumidified air without adding extra moisture Conditioned air is distributed to maintain optimal temperature and humidity Uses a secondary air stream for cooling without adding moisture to the processing area Heat recovery wheels transfer waste heat to pre-condition incoming air WORKING: Hot process air passes through the heat exchanger without direct contact with water A separate secondary air stream is cooled via evaporative cooling (water absorbs heat and evaporates) Heat is transferred from the primary air to the secondary air, cooling the primary air without adding moisture The cooled, dry air is then supplied to the food processing area, maintaining temperature and humidity control Waste heat from refrigeration units or exhaust air is recovered and used for pre-conditioning fresh intake air 4) Indirect Evaporative Cooling (IEC) with Heat Recovery AHUs with High-Efficiency Particulate Air (HEPA) filtration are critical to control humidity These filter airborne contaminants, regulate temperature and humidity in Ready-To-Eat (RTE) food production WORKING: Ambient air enters the AHU and passes through pre-filters to remove large contaminants Air is cooled or dehumidified using refrigeration or desiccant- based moisture control HEPA filtration captures airborne microorganisms, mold, and fine particles before air distribution Clean, conditioned air is distributed into the food processing area, maintaining hygiene and temperature control 5) Air Handling Units (AHUs) with HEPA Filtration OUR EXPERTISE PMG Engineering delivers end-to-end engineering design and project management services for the food manufacturing facilities globally We provide HVAC design inputs and ensure that the HVAC design inputs are effectively incorporated, communicated, and adhered to during the detailed engineering phase We facilitate coordination, manage risks, maintain quality control, and promote effective communication between stakeholders, ultimately enhancing the overall quality assurance of the HVAC system design PARTNER WITH PMG TO BUILD WORLD-CLASS FOOD FACTORIES THAT MEET GLOBAL STANDARDS ABOUT PMG BUILD WORLD CLASS FOOD FACTORIES At PMG, we offer complete solutions from design to commissioning, specializing in food factory construction that meets global standards. NEW DESIGN EXPAND UPGRADE CORE VALUES Safe-by-Choice Objectivity First-time Quality Ownership Maximize Value Reliable & Trustworthy Business S T N E I L C Y E K T A S U H C A E R PMG ENGINEERING PRIVATE LIMITED 1504, Office Tower, Logix City Center, Sector 32, Noida U.P. 201301 www.pmg.engineering E R E H N A C S PMGENGINEERING

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