Fondamentaux Et Ingénierie
Construction de la pompe (Partie 1)
In 1689 the physicist Denis Papin invented the centrifugal pump and today this kind of pump is the most used around the world. The centrifugal pump is built on a simple principle: Liquid is led to the impeller hub and by means of the centrifugal force it is flung towards the periphery of the impellers. The construction is fairly inexpensive, robust and simple and its high speed makes it possible to connect the pump directly to an asynchronous motor.
Expansion Valves Selection
The expansion valve regulates the amount of compressed liquid refrigerant moving into the evaporator. It removes pressure from the liquid refrigerant to allow expansion or change of state from a liquid to a gas in the evaporator. In order to properly select Expansion Valves one should pay attention to the items that we mention in this post.
Tube à eau contre les chaudières à tube d'incendie
Les chaudières à tubes d'eau et les chaudières à tubes de fumée sont deux types différents de chaudières à vapeur couramment utilisées dans les applications industrielles et commerciales. Les deux types de chaudières utilisent un système de tubes pour générer de la vapeur, mais elles diffèrent par la manière dont les tubes sont disposés et par la manière dont les gaz chauds du brûleur passent à travers les tubes.
Water Hammer (Part1)
Under unfavorable circumstances, damage due to water hammer may occur in pipelines measuring more than one hundred meters and conveying only several tenths of a liter per second. But even very short, unsupported pipelines in pumping stations can be damaged by resonant vibrations if they are not properly anchored. By contrast, the phenomenon is not very common in building services systems, e.g. in heating and drinking water supply pipelines, which typically are short in length and have a small cross-section.
Formules de réfrigération et calculs
These formulas are commonly used in the field of refrigeration and air conditioning to calculate various performance parameters of a refrigeration system such as compression work, compression power, coefficient of performance, net refrigeration effect, capacity, compressor displacement, heat of compression, volumetric efficiency, and compression ratio. These formulas are based on the thermodynamics principles and are generally used to evaluate the performance of the refrigeration system and to optimize its design.
Le coefficient de vitesse (CV)
Cv, or coefficient of velocity, is a measure of the flow capacity of a valve. It represents the number of gallons per minute (GPM) of water at 60°F that will flow through a valve with a one-inch opening at a pressure drop of one pound per square inch (PSI). Cv can be calculated using various formulas, such as the one based on water at 60F and one that takes into account the specific gravity of the fluid. Cv is a theoretical value and it may vary depending on the actual conditions of the valve. When selecting a valve for a specific application, it is important to consider the Cv in relation to the flow rate and pressure drop requirements of the system, as well as other factors such as ease of maintenance, cost, and safety.
Pipe Insulation Guideline
Pipe insulation is crucial for maintaining energy efficiency, temperature control, condensation control, noise reduction, and safety. ASHRAE provides specific thickness recommendations for different pipe sizes and temperature ranges in its standard 90.1. When selecting pipe insulation based on ASHRAE standards, it’s important to consider the temperature, pipe size, environmental considerations, fire resistance, and energy efficiency.
Tuyauterie de réfrigérant - partie 2
Dans cet article, nous poursuivrons notre formation complète sur la façon de dimensionner la tuyauterie de réfrigérant. Nous couvrirons tous les aspects importants de ce processus, y compris la détermination de la taille du tuyau, de la chute de pression et d'autres facteurs. Nous discuterons également de sujets tels que de dimensionnement des lignes de réfrigérant, une longueur équivalente pour les lignes de réfrigérant et comment déterminer la longueur équivalente. Avec cette formation, vous aurez les connaissances et la confiance nécessaires pour tailler les tuyaux de réfrigérant avec précision et correctement dans n'importe quelle situation.
Normes Et Conformité
Conception de ventilation HVAC: Presurisation de levage / ascenseur
Complete guide to HVAC lift/elevator pressurization design using BS 5588-4 standards covering pressure control, airflow calculations, and elevator system integration for effective emergency vertical transportation protection.
Conception de ventilation CVC : pressurisation des escaliers + dimensionnement des évents de secours
Complete guide to HVAC staircase pressurization and relief vent sizing design using ASHRAE and BS standards covering pressure control, airflow calculations, and relief system integration for effective emergency egress protection.
Conception De Ventilation CVC : couloir/hall D'ascenseur/maquillage D'atrium/pressurisation
Complete guide to HVAC corridor, lift lobby, and atrium make-up air and pressurization design using CIBSE and ASHRAE standards covering pressure control, airflow calculations, and fire safety integration for effective emergency protection.
Conception de ventilation CVC : extraction de fumée d'atrium
Complete guide to HVAC atrium smoke extraction design using CIBSE and ASHRAE standards covering smoke layer management, extraction calculations, and advanced fire safety integration for large-volume space protection.
Conception de ventilation CVC : extraction de fumée de couloir/hall d'ascenseur
Complete guide to HVAC corridor and lift lobby smoke extraction design using CIBSE fire engineering standards covering smoke removal, pressure management, and life safety system integration for effective emergency ventilation.
Conception de ventilation CVC : système de CO pour le stationnement des voitures
Complete guide to HVAC car parking CO detection systems using NFPA 720 standards covering carbon monoxide monitoring, alarm systems, ventilation integration, and safety protocols for parking facility protection.
Conception de ventilation HVAC: Taux de ventilation de maquillage du parking par vitesse
Complete guide to HVAC car parking make-up ventilation design using ASHRAE velocity-based methods covering air movement calculations, system integration, and performance optimization for effective parking facility ventilation.
Conception de ventilation HVAC: Taux de ventilation de l'extrait de parking
Complete guide to HVAC car parking extract ventilation design using CIBSE and BS standards covering CO control, air change rates, and specialized applications for safe and efficient parking facility ventilation systems.
Conception de ventilation HVAC: taux de ventilation de cuisine commerciale (capuche / canopée, extrait de plafond / maquillage)
Complete guide to HVAC commercial kitchen ventilation design using ASHRAE, CIBSE, and VA standards covering hood exhaust rates, makeup air requirements, and specialized applications for effective contaminant control and energy efficiency.
Conception de ventilation HVAC: taux de ventilation du tabac / de la zone fumeurs
Complete guide to HVAC smoking area ventilation design using CIBSE standards covering high-performance ventilation rates, specialized system requirements, and health protection strategies for tobacco use areas.
Outils Et Ressources Numériques
Belimo SelectPro – Téléchargement Gratuit
Download SelectPro desktop app free. Size and select valves, actuators, and sensors with export builder, quote generator, and centralized reference documents. For HVAC engineers and contractors.
Taux de dilatation thermique pour les matériaux de tuyaux courants
Effortlessly calculate rates of thermal expansion for common pipe materials with our interactive calculator. Get accurate data, design insights, and actionable tables for metals and plastics—essential for HVAC engineers, designers, and consultants focused on system reliability and energy efficiency.
HVAC Equipment Life Espérance de vie Calculatrice
Nous avons créé une calculatrice professionnelle de l'espérance de vie de l'équipement HVAC. L'application fournit des calculs complets pour déterminer la durée de vie utile restante de divers types d'équipements CVC.
Solutions logicielles BIM pour les applications HVAC modernes
Alors que l'industrie HVAC continue d'évoluer en 2025, la modélisation des informations de construction (BIM) est devenue un outil indispensable pour les professionnels qui cherchent à optimiser les processus de conception, d'installation et de maintenance. Pour les ingénieurs HVAC, les entrepreneurs et les techniciens, la sélection du bon logiciel BIM peut avoir un impact significatif sur l'efficacité et les résultats du projet. Explorons les solutions BIM les plus efficaces pour les applications CVC.
Téléchargement de logiciels Mcquay
McQuay (dans le cadre de Daikin Industries) est l'une des plus grandes sociétés de climatisation, de chauffage, de ventilation et de réfrigération de l'industrie HVAC / R. Par conséquent, nous avons décidé de faire des logiciels que cette entreprise a introduits dans l'industrie en fonction de leur expérience et de leurs connaissances disponibles en téléchargement.
Softwares de sélection Bell & Gossett
#Xylem Bell & Gosset #Selection, #Sizing & #Cad Tools and #Softwares
Fichiers Daikin Revit
Daikin Applied Resource Library - Revit Files Systems Toftop Systems Handlers - Chilleurs à air extérieur refroidis