TECHNICAL ARTICLES

Photovoltaic Heat Pump Hybridisation

When we talk about renewable energies, there is no doubt that the first concepts to come to mind are solar thermal and photovoltaic energy, others such as wind, geothermal or tidal energy, although we also know them, are secondary. But traditionally these two have been renewability queens…

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Metabolism and Ventilation in Heated Pools

The treatment that has been made to date of the Regulations and Regulations has not been very rigorous. Solutions have been taken which, although accepted by the majority, sometimes do not comply with the required requirements. This is one of those cases, and this time, in addition, related to the ventilation of the air-conditioned premises…

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Hospital Air Conditioning

The Regulations of Air Conditioning and Ventilation of Hospitals are wide, the diversity of Zones to be air-conditioned and ventilated so indicate. From corridors to operating rooms, from delivery rooms to examination rooms, … the typologies and needs are very varied and different. Until today, where one characteristic is common to all, the defense against SARS-CoV-2 …

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Photovoltaic Heat Pump

The global targets for decarbonisation and the reduction of greenhouse gas emissions raise the increasing use of renewable energies. Within these, photovoltaic solar energy is an energy source that produces electricity of renewable origin, obtained directly from solar radiation by a semiconductor device called a photovoltaic cell…

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Industrial Air Conditioning

The air conditioning concept includes thermal, hygrometric control and ventilation levels to reduce the concentration of pollutants, VOCs, … As is easily understood, in the industry the concepts of thermal and hygrometric comfort can be complex to achieve. Industrial buildings are not offices where these parameters are …

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Monitoring and Control Systems in Hospitals

From KEYTER, in collaboration with HEATCOOL, we face this problem for different Hospitals. For this joint project, KEYTER has developed a control system specially designed with the aim of protecting health personnel and other users of hospital centers, in the case of highly infectious diseases, and patients with immune system problems who are hospitalized.

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Centralised 2-pipe systems for heating and DHW

generation using Aerothermal energy

Keyter organised in collaboration with Uponor, leader in underfloor heating, geothermal, multilayer piping, Invisible air conditioning, plumbing and PEX an exclusive Webinar.

The reversible heat pump

How to keep the refrigerant content small and guarantee a constant (high) water temperature at low outdoor temperatures.

UV-C systems against COVID19 (SARS-CoV-2)

Ultraviolet C (UV-C) light has been identified as one of the most important barriers to preventing SARS-CoV-2 (COVID19) airborne infections.

Screw chillers with refrigerant 1234ZE

In 2004 fluorinated gases emitted by the refrigeration/air conditioning industry were responsible for 1.3% of global warming, up to 7.9% by the year 2050.

Different ways for dehumidification

The motivation and need to tackle the project is due to the fact that most of the facilities in the non-residential building sector have a high latent load.

Airconditioning for large spaces

In the recent years, there has been an increase in the regulatory requirements regarding indoor air quality and energy savings in large commercial area projects.

Climate efficiency in hotels

Due to the European policy, hotels must improve their energy efficiency and reduce their gas emissions.

TECHNICAL GUIDE RITE

Technical Guide 01: Maintenance of thermal installations

The technical instruction IT3 of the RITE establishes the obligation to design specific maintenance programs for the thermal installations of buildings, which must contain the programming of the necessary tasks, as well as the documentation and filing procedures of all the preventive and repair actions that take place in each specific installation. The maintenance programs, as well as the records foreseen in them, will allow third parties to verify that the expected performance of each installation is being maintained.

Technical Guide 02: Procedures for the determination of the energy efficiency of water chiller plants and autonomous air handling equipment.

This document summarizes, with eminently practical and application criteria, a guide to the procedure to be followed for the determination in situ of the instantaneous operating performances of the refrigeration equipment most frequently found in the air-conditioning installations of our buildings, specifically water chiller plants and air cooling equipment by mechanical compression cycle, both reversible and non-reversible, explicitly taking into account the difficulties involved in measuring the operating parameters of refrigeration equipment, far from the working conditions provided by a test bench, and once integrated in the context of a real and concrete installation, which directly affects them.

Technical Guide 03: Design and Calculation of Thermal Insulation of Piping, Appliances and Equipment

This document provides the calculation methods and standard sizing criteria for the estimation of the insulation thickness to be used in equipment and elements of the building and industrial installations. These calculations are carried out in steady state and one-dimensional flow.

Technical Guide 04: Cooling Towers

This technical guide is based on the current Spanish situation of cooling towers in thermal installations in buildings, in the sense that they are considered as a risk factor for the spread of legionella. For this reason, there is a significant decrease in the installation of this equipment in the building sector, which leads to a decrease in energy efficiency and, as a consequence, higher energy consumption.

Technical Guide 05: Consumption Accounting

The purpose of this document is to establish the requirements to be met by the consumption measurement instruments (water, energy supplied to the thermal power plant and useful thermal energy supplied to the building), which must house the thermal installations in buildings, as well as the accounting of such consumption, in order to achieve continuous monitoring of the energy efficiency of the installations and their hot water consumption.

Technical Guide 06: Central Sanitary Hot Water

The purpose of this guide is to analyze the installations of centralized production of domestic hot water (DHW), from the points of view of energy efficiency and regulatory compliance.

AIR CONDITIONING MANUALS

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