## 6 Conclusions  
Radiant surface conditioning systems based on PPR capillary tube mats provide high standards of comfort and significant energy savings over convective air delivery systems. Large-format thermal ceramic panels TCP have been applied to the floor of the University Museum of Alicante (Spain), containing capillary tube mats. Three scenarios were studied. The first scenario was based on an existing air conditioning system by means of all-air conditioning and duct distribution (OP1). In the second, a radiant surface heating system, based on radiant floor TCP ceramic thermal panels with embedded PPR capillary mats was applied (OP2). The third scenario was a variant of the latter one: it incorporated a system of solar thermal panels on the rooftop providing renewable energy to the system (OP3). The following results were obtained:  
* The TCP panels system, thanks to the porcelain stoneware's high thermal conductivity and the capillary mats embedded in the panels, were shown to be more efficient energy-wise, and more comfortable than OP1. Annual energy demand was 24.91% lower in OP2 than OP1.
* If 230 m\({}^{2}\) of solar thermal panels were also installed on the rooftop with water storage tanks, for a triple phase absorption system by chemical energy accumulation using lithium chloride (LiCl), the energy savings would be considerable: 60.79% saved compared to OP1 and 47.79% compared to OP2.  
The reduction in annual energy demand (24.91%) was around 20-30% below that obtained in other buildings on Spain's Mediterranean coast: 31.85% in a stand-alone single-family house, and 36.35% in offices of the University of Alicante. These differences are due to the installation's distinct scale: a more demanding regime of use is required in terms of \(T_{i}\) and RH conditions. The application of thermal solar panels on the rooftop, used as an active solar system in contrast to passive conditioning systems, was shown to be more efficient, both in heating and cooling modes by means of the chemical energy system (LiCl). When associated with TCP panels, the reduction of annual energy demand could reach 47.79%, compared to 20.25% obtained in the case of facade greenhouses, or 38.85% in the case of using the basement as a passive cooling system in summer and indoor air temperature moderation \(T_{i}\) in winter.  
In future studies, we will analyse the feasibility of implementing radiant surface conditioning systems in public cultural buildings. Required return on investment and amortisation periods will be calculated, while energy cost reductions will be quantified as well as surcharges due to the installation of TCP panels with capillary mat water distribution and substation management.  
Conceptualisation, methodology, TCP panels design and application, funding acquisition, V.E.-L; investigation, writing--original draft preparation, V.E.-I; control of the data collecting of the monitorisation system and graphics, C.R.-M.; simulations by Design Builder, J.L.S.-P.; calibration of the model in Design Builder, and interpretation of data results, V.E.-I.  
This research has been funded by the projects \"Generation of knowledge on the multisensory interaction of human beings with the environments for the development of new products and services in the ceramics sector (4 SENSES)\" (ACOMP/2010/040). Complementary aid for R+D+i projects. Generalitat Valenciana. Ministry of Education. Spain, 2010; and \"Research on sustainable architectural and bioclimatic conditioning solutions using ceramic materials (ASCER1-17)\". Spanish Association of Manufacturers of Ceramic Tiles and Flooring (ASCER). 2015-2017.  
Our thanks to [PERSON], for his helping in the monitorization of the MUA, and TCP panels mounting; and to [PERSON] and [PERSON] for their help with the Blower-Door test measurements.  
The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.