Asier Martinez-Urrutia

Asier Martinez-Urrutia
Tecnalia · Energy and Environment

About

13
Publications
1,302
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
80
Citations
Introduction
Skills and Expertise

Publications

Publications (13)
Conference Paper
Full-text available
Thermal storage systems use for district heating can improve their efficiency by decreasing their storage temperature and therefore minimizing heat losses and cost. A high source temperature heat pump operating with heat source temperature between 30 °C to 50 °C can further optimize the performance of the system and deliver hot water above 70 °C at...
Conference Paper
Full-text available
Power-to-heat-to-power systems are an interesting approach to deal with the intermittent power generation from renewable energy sources. However, storing heat requires large storage volume and associated heat losses decrease the system performance. High Temperature Heat Pump (HTHP) systems can operate during surplus power generation periods storing...
Conference Paper
Full-text available
The performance of a heat recovery and upgrade system based on a 200 kW absorption heat transformer (AHT) is studied with a focus on its electrical consumption. The analyzed system has been installed in the power plant of an oil refinery. The system is fully monitored allowing comparison between measured and simulated data. The electrical energy co...
Article
The subject of the transport phenomena has a pivotal role in the performance of aqueous lithium bromide falling film absorbers. Although the thermodiffusion phenomenon appears inside the solution, very little is known about its influence on the mass transport. This study numerically analyses the influence of the thermal mass transfer mechanism on a...
Conference Paper
Single Stage Absorption Heat Transformers (SSAHT) are able to increase the temperature of 50% of the waste energy by approximately 50 K, offering an interesting opportunity to industry for waste heat recovery and reduction of primary energy consumption. In this paper, a SSAHT pilot plant installed in a refinery is described. The installation, part...
Article
Wetting surface is a very important issue for the design of absorption applications and heat exchangers. The contact angle is deemed essential in wettability studies; However, LiBr aqueous solution contact angle studies are limited. This work analyses the contact angle of LiBr aqueous solution in the range of 0–55% mass fraction on different materi...
Article
Wettability has a key impact on the performance of LiBr-H2O horizontal-tube falling film absorbers working under typical operating conditions. Therefore, it is necessary to study the influence of the wettability properties on the film hydrodynamics and wetted area. This work analyses the influence of the contact angle (0° – 120°) on the transient f...
Article
Full-text available
This paper presents the designing aspects and first experimental characterization of an adaptable Smart Modular Heat Recovery Unit (SMHRU) developed under the scope of the E2VENT Project. This SMHRU is being designed as a part of an adaptable renovation module for the retrofitting of multi-storey residential building from the 60's, 70's across Euro...
Article
The building sector is responsible for more than 40% of the EU’s total energy consumption. To reduce the energy consumption in buildings and to achieve the EU’s fossil fuel saving targets for 2020 and beyond 2050, the energy efficient retrofitting strategies are critically important and need to be implemented effectively. This paper presents a dyna...
Conference Paper
Full-text available
The present paper is aimed at exploring different modelling tools usually used for simulating the performance of absorption cycles in general, and Absorption Heat Transformers (AHT) utilizing H2O/LiBr as the working pair in particular. Three models based on the same set of equations describing the heat transfer processes have been written using thr...

Network

Cited By

Projects

Projects (3)
Project
The Indus3Es project, received funding in the frame of Horizon 2020 TOPIC EE-18-2015: New technologies for utilization of heat recovery in large industrial systems, considering the whole energy cycle from heat production to transformation, delivery and end use. Indus3Es SYSTEM is aimed to recover and revalue non-recovered low-exergy surplus heat in energy intensive industrial processes. Indus3Es System will upgrade low temperature waste heat streams to process heat streams at higher temperature levels and then use them in internal industrial process, reducing primary energy consumption of the industry. http://www.indus3es.eu/
Project