Ingeniería y conocimiento

Fundamentos e ingeniería

Cálculo del volumen de aire Hvac

El volumen de aire para un sistema HVAC se calcula a partir del calor sensible en el espacio acondicionado. Para la unidad típica de calefacción y enfriamiento, el cálculo es para enfriar porque se necesita más aire para enfriar un espacio que calentarlo. Si el espacio acondicionado se puede enfriar correctamente con una cantidad dada de CFM, entonces el espacio se puede calentar correctamente con la misma cantidad de CFM.

Thermal Storage (HVAC)

Thermal energy may be stored in three main ways: – Sensible Storage – Latent Storage – Thermo-Chemical Storage. In addition, the two common thermal storage strategies employed are: – Load Levelling Strategy – Load Shifting Strategy

Dimensionamiento del tanque hidroneumático

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.

Conceptos básicos de dimensionamiento de bombas

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.

Hvac Equations (U.S./Metric)

The heating, ventilation, and air conditioning (HVAC) equations. In both U.S. and Metric units.

Tanques de Expansión

How does Boyle’s law relate to sizing expansion tanks in domestic hot water systems? what size expansion tank is required?

Fórmulas de dimensionamiento del tanque de expansión

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.

Bombeo Primario Secundario

– 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.

Plantas de calefacción y refrigeración de 4 y 2 tubos

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.

Anterior

Normas y cumplimiento

Diseño del conducto de HVAC: pérdida de fricción de accesorios del conducto

Guía completa para la pérdida de fricción de los accesorios del conducto HVAC utilizando estándares de portadores que cubren coeficientes de pérdida, cálculos de caída de presión y optimización del sistema para un diseño eficiente de distribución de aire.

Diseño del conducto HVAC: amortiguadores, atenuadores y bobinas Pérdida de fricción

Guía completa de amortiguadores de HVAC, atenuadores y bobinas Pérdida de fricción utilizando estándares SMACNA que cubren los cálculos de caída de presión, la selección de componentes y la optimización del sistema para un diseño eficiente de distribución de aire.

Diseño del conducto HVAC: conducto redondo a rectangular equivalente

Guía completa para la equivalencia del conducto redondo a rectangular HVAC utilizando estándares ASHRAE que cubren fórmulas de conversión, consideraciones de rendimiento y optimización del sistema para instalaciones con restricciones espaciales.

Diseño del conducto HVAC: pérdida de fricción del conducto

Guía completa para los cálculos de pérdida de fricción del conducto HVAC utilizando estándares ASHRAE que cubren gráficos de fricción, análisis de caída de presión y optimización del sistema para un diseño eficiente de distribución de aire.

Diseño del conducto HVAC: clasificación de presión del conducto

Guía completa para la clasificación de presión del conducto HVAC utilizando estándares SMACNA que cubren la selección de la clase de presión, los requisitos de construcción y los protocolos de prueba para sistemas de conductos seguros y eficientes.

Diseño del conducto HVAC-Ducts de extracción de contaminantes de dimensionamiento (humo | grasa | gases | polvo seco y húmedo)

La guía de bolsillo de Ashrae enumera las velocidades mínimas de transmisión que mantienen contaminantes en el aire mientras viajan a través de conductos de escape. Tabla 2.9 (Edición 2013, cap. 02, pp. 60

Diseño del conducto HVAC: tamaño de conducto de cocina comercial

Guía completa del tamaño de los conductos de cocina comerciales utilizando estándares ASHRAE y NFPA que cubren el diseño de la campana de escape, gestión de grasa, seguridad contra incendios y sistemas de aire de maquillaje para operaciones de servicio de alimentos.

Diseño del conducto de HVAC: tamaño del conducto por velocidad y criterios de ruido (NC)

Guía completa para el tamaño del conducto HVAC utilizando criterios de velocidad y ruido con estándares de cibry y cibse que cubren el diseño acústico, los límites de velocidad y el control de ruido para aplicaciones sensibles.

Diseño del conducto HVAC: tamaño del conducto por método de igual fricción

Guía completa para el tamaño del conducto HVAC utilizando el método de igual fricción con estándares SMACNA y ASHRAE que cubren los procedimientos de cálculo, la selección de la velocidad de fricción y la optimización del sistema para un diseño efectivo de distribución de aire.

Diseño del conducto HVAC: recomendaciones de ductos Smacna

Guía completa del dimensionamiento del conducto HVAC utilizando recomendaciones de Smacna que cubren los métodos de recuperación de la misma fricción, velocidad y recuperación estática con cálculos de diseño y optimización del sistema para una distribución efectiva del aire.


Herramientas y recursos digitales

Air Filters Efficiency Classification

ASHRAE 52.2: Filter testing was originated from America in 1930 (ASHVE and AFI code). It was then reviewed and modified in 1967 and 1968. ASRHAE collaborated with American National Standard Institude (ANSI) in 1992 to create ASHRAE-ANSI 52.1. Finally updated to ASHRAE 52.2 in 2007.

Psychrometric Programming Functions

ibrary of psychrometric functions to calculate thermodynamic properties of air for Python, C, C#, Fortran, JavaScript and VBA/Excel

Refrigerants in 2025: Properties, Applications, and Compatibility

As the HVAC and refrigeration industry continues to evolve with environmental regulations and technological advancements, understanding refrigerant properties remains crucial for engineers, technicians, and facility managers. This comprehensive guide provides an updated overview of common refrigerants, their compositions, and applications in today’s market.

Software Carrier Hap

Carrier’s Hourly Analysis Program is two powerful tools in one package – versatile features for designing HVAC systems for commercial buildings AND powerful energy analysis capabilities for comparing energy consumption and operating costs of design alternatives.

Trace 700 Software

TRACE 700 enables building designers to optimize the building, system and equipment designs on the basis of energy utilization and life-cycle cost. The Trane software for TRACE 700 facilitates analysis of the energy and economic effects of virtually any chiller plant configuration by allowing users to manipulate a wide range of variables and create a profile of their specific building.

Download EVAP-COND 5.0: The Ultimate Heat Exchanger Simulation Tool for HVAC Engineers

Whether you’re designing a new heat exchanger, optimizing an existing system, or researching alternative refrigerants, EVAP-COND provides the detailed analysis capabilities needed to make informed decisions. I encourage all HVAC engineers and researchers to explore this powerful simulation tool and experience firsthand how it can transform your approach to heat exchanger design.

Descarga de libros de texto de transferencia de calor

The book is meant for juniors, seniors, and first-year graduate students. And to those who choose to learn the subject on their own, and to practicing engineers who use it as a reference. Whether one studies alone or with a class, learning means posing, then answering, one’s own questions.

Flexible Duct Calculator

Flexible Duct Calculator based on four different methods. Based on Friction Loss, Based on Duct Diameter, Equivalent Rectangular Duct, Equivalent Round Duct Diameter. Also table of Maximum Recommended Supply Velocity.

Air Change Cfm Calculator

The rate at which air is exchanged (in the premises) represents another method of measuring ventilation capacity & effectiveness. Air exchange rate is typically expressed in Air Changes per Hour – “ACH”. Air changes per hour can be estimated by determining the total air supplied to, and removed from, the premises “total air exchange” or the outdoor (fresh) air supplied to, and removed from, the premises “outdoor air exchange”. We invite you to experience how this calculator can transform your workflow. Whether you’re specifying a new system, troubleshooting an existing installation, or teaching the next generation of HVAC professionals, this tool was built with your needs in mind.

Anterior