Fondamenti e ingegneria
Calcolo del volume d'aria Hvac
Il volume dell'aria per un sistema HVAC viene calcolato dal calore sensibile nello spazio condizionato. Per la tipica unità di riscaldamento e raffreddamento, il calcolo è per il raffreddamento perché è necessaria più aria per raffreddare uno spazio piuttosto che riscaldarlo. Se lo spazio condizionato può essere correttamente raffreddato con una determinata quantità di CFM, lo spazio può essere riscaldato correttamente con la stessa quantità di CFM.
Accumulo termico (HVAC)
L'energia termica può essere immagazzinata in tre modi principali: – Accumulo sensibile – Accumulo latente – Accumulo termochimico. Inoltre, le due comuni strategie di accumulo termico impiegate sono: – Strategia di livellamento del carico – Strategia di spostamento del carico
Dimensionamento del serbatoio idropneumatico
Hydropneumatic tanks are primarily used in a domestic water system for draw down purposes when the pressure booster system is off on no-flow shutdown (NFSD). The NFSD circuitry turns the lead pump off when there is no demand on the system. While the system is off in this condition, the hydropneumatic tank will satisfy small demands on the system. Without the tank, the booster would restart upon the slightest call for flow such as a single toilet being flushed or even a minute leak in the piping system. Hydropneumatic tank sizing is dependent on two factors: – Length of time you wish the pumps to remain off in a no-flow situation. – The tank location in relation to the pressure booster.
Pump Sizing Core Concepts
Pump sizing involves matching the flow and pressure rating of a pump with the flowrate and pressure required for the process. The mass flowrate of the system is established on the process flow diagram by the mass balance. Achieving this mass flowrate requires a pump that can generate a pressure high enough to overcome the hydraulic resistance of the system of pipes, valves, and so on that the liquid must travel through. This hydraulic resistance is known as the system head.
Equazioni Hvac (Stati Uniti/Metrico)
The heating, ventilation, and air conditioning (HVAC) equations. In both U.S. and Metric units.
Vasi di espansione
How does Boyle’s law relate to sizing expansion tanks in domestic hot water systems? what size expansion tank is required?
Formule di dimensionamento del serbatoio di espansione
Expansion tanks are a necessary part of all closed hydronic systems to control both minimum and maximum pressure throughout the system. A comprehensive review of tank types and sizing procedure for expansion tanks.
Primary Secondary Pumping
– What is Primary-Secondary Pumping? – PRIMARY-SECONDARY BASICS. – PRIMARY-SECONDARY RULES, DEFINITIONS. WHEN TWO PIPING CIRCUITS ARE INTER-CONNECTED, FLOW IN ONE WILL CAUSE FLOW IN THE OTHER, T0 A DEGREE DEPENDING UPON THE PRESSURE DROP IN THE PIPING COMMON T0 BOTH.
Piante di riscaldamento e raffreddamento da 4 e 2 tubi
A 4-pipe heating and cooling plant contains both central heating and cooling equipment and is capable of delivering heating water and chilled water to the building simultaneously through four pipes (one heating water supply, one heating water return, one chilled water supply, and one chilled water return). Heating and cooling equipment within the building that is connected to a 4-pipe system will have four pipe connections, unless the equipment provides either heating only or cooling only. In this case, the equipment would have only two pipe connections.
Constant Air Volume (CAV) Systems
HVAC air systems can be either centralized or decentralized. Centralized air systems receive their cooling and heating energy from a remote central plant. Decentralized HVAC air systems contain the central heating and cooling plant equipment within the air system itself. HVAC air systems can also be constant air volume (CAV) or variable air volume (VAV). CAV systems deliver constant supply airflow at a variable temperature. VAV systems deliver variable supply airflow at a constant temperature. CAV and VAV air systems can be further subdivided into systems that condition a single temperature zone and systems that condition multiple temperature zones.
Standard e conformità
Design di ventilazione HVAC: pressurizzazione di sollevamento/ascensore
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.
Design di ventilazione HVAC: pressurizzazione delle scale + dimensionamento della sfiato di rilievo
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.
Progettazione della ventilazione HVAC: corridoio/atrio dell'ascensore/ristrutturazione dell'atrio/pressurizzazione
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.
Design di ventilazione HVAC: estratto di fumo atrio
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.
Design di ventilazione HVAC: estratto di fumo con corridoio/sollevamento
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.
Design di ventilazione HVAC: sistema di parcheggio per auto
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.
HVAC Ventilation Design: Car Parking Make-Up Ventilation Rate By Velocity
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.
HVAC Ventilation Design: Car Parking Extract Ventilation Rate
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.
HVAC Ventilation Design: Commercial Kitchen Ventilation Rates (Hood/Canopy, Ceiling Extract/Makeup)
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.
Design di ventilazione HVAC: tasso di ventilazione del tabacco/area fumatori
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.
Strumenti e risorse digitali
Belimo SelectPro – Download gratuito
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.
Tassi di espansione termica per materiali tuboli comuni
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.
Calcolatore di aspettativa di vita delle apparecchiature HVAC
Abbiamo creato un calcolatore di aspettativa di vita professionale HVAC. L'applicazione fornisce calcoli completi per determinare la vita utile rimanente di vari tipi di apparecchiature HVAC.
Soluzioni software BIM per moderne applicazioni HVAC
Mentre l'industria HVAC continua a evolversi nel 2025, la costruzione di informazioni sulle informazioni (BIM) è diventata uno strumento indispensabile per i professionisti che cercano di ottimizzare i processi di progettazione, installazione e manutenzione. Per gli ingegneri HVAC, gli appaltatori e i tecnici, la selezione del software BIM giusto può avere un impatto significativo sull'efficienza e sui risultati del progetto. Esploriamo le soluzioni BIM più efficaci per le applicazioni HVAC.
Download di McQuay Softwares
McQuay (As part of Daikin Industries) is one of the largest air conditioning, heating, ventilating and refrigeration companies in the HVAC/R industry. Therefore, we decided to make some softwares that this company has introduced to the industry based on their experience and knowledge available for download.
Software di selezione di Bell & Gossett
#Xylem Bell & Gosset #Selection, #Sizing & #Cad Tools e #SoftWares
File Daikin Revit
Biblioteca di risorse applicate dakin-Revit Files Rooftop Systems Handlers Air