title: Evaluation of a stratified tank based heat recovery loop via dynamic simulation

authors: Schlosser, Florian

abstract: Prerequisite for hot water recovery in the dairy and beverage industry is the use of heat storage, such as stratified tanks. Total Site Heat Integration enables the targeting of heat recovery potential, the concrete identification of suitable sinks and source profiles and the dimensioning of intermediate circuits and storages. For a cost and energy efficient storage, the aim to maintain stratification by suitable thermocline control management. Dynamic simulation enables a reliable estimation of energy savings and correct storage/control design considering the changing operation times, source and sink loads as well as thermal inertias. This poses two challenges: model accuracy and acceptable simulation time. A stratified tank model with Variable Layer Height (VLH) is evolved reducing numeric diffusion effects. A sensitive analysis shows the increased accuracy with acceptable simulation time. As part of a case study, thermocline growth due to numeric diffusion is reduced up to approximately 35 % by a VLH model. The model is simulated for a case study in the dairy industry. It is shown that up to 94 % of the total heat recovery target can be achieved by the modelled heat recovery loop based on a stratified tank and the applied system control.

text: Evaluation of a stratified tank based heat recovery loop via dynamic simulation Prerequisite for hot water recovery in the dairy and beverage industry is the use of heat storage, such as stratified tanks. Total Site Heat Integration enables the targeting of heat recovery potential, the concrete identification of suitable sinks and source profiles and the dimensioning of intermediate circuits and storages. For a cost and energy efficient storage, the aim to maintain stratification by suitable thermocline control management. Dynamic simulation enables a reliable estimation of energy savings and correct storage/control design considering the changing operation times, source and sink loads as well as thermal inertias. This poses two challenges: model accuracy and acceptable simulation time. A stratified tank model with Variable Layer Height (VLH) is evolved reducing numeric diffusion effects. A sensitive analysis shows the increased accuracy with acceptable simulation time. As part of a case study, thermocline growth due to numeric diffusion is reduced up to approximately 35 % by a VLH model. The model is simulated for a case study in the dairy industry. It is shown that up to 94 % of the total heat recovery target can be achieved by the modelled heat recovery loop based on a stratified tank and the applied system control.

year: 2018

title: Digital music libraries - Research and development

authors: Bainbridge, David

abstract: A report on the progress of several major research and development projects in digital music libraries is presented. Digital music libraries provide enhanced access and functionality that facilitates scholarly research and education. The issue of integrating digital music library collections with interactive instructional applications is addressed.

text: Digital music libraries - Research and development A report on the progress of several major research and development projects in digital music libraries is presented. Digital music libraries provide enhanced access and functionality that facilitates scholarly research and education. The issue of integrating digital music library collections with interactive instructional applications is addressed.

year: 2001

title: The sociocultural impact of tourism on the Te Arawa people of Rotorua, New Zealand

authors: Te Awekotuku, Ngahuia

subjects: Te Arawa

abstract: This is a study of how tourism in New Zealand has affected a major tribal community; their insights, reactions, and experiences. Covering five generations, it presents an oral account of the actively concerned social groups. Wherever possible, or necessary, this is reiterated and reinforced by the written record.

The work comprises two parts, the first which outlines the historic background according to available documentation, and the second which focusses on particular aspects of tribal culture and experience. Material for this section, otherwise unrecorded, came from the narrated stories, reminiscences, and often shrewd observations of the people themselves. It deals with residential community, song and dance, arts and crafts, and the role of women.

As an essentially ethnographic commentary, the study does not examine the economic features or effects of tourism, except where fiscal factors are pertinent to the understanding or continuity of the Te Arawa experience of the tourist world.

text: The sociocultural impact of tourism on the Te Arawa people of Rotorua, New Zealand This is a study of how tourism in New Zealand has affected a major tribal community; their insights, reactions, and experiences. Covering five generations, it presents an oral account of the actively concerned social groups. Wherever possible, or necessary, this is reiterated and reinforced by the written record.

The work comprises two parts, the first which outlines the historic background according to available documentation, and the second which focusses on particular aspects of tribal culture and experience. Material for this section, otherwise unrecorded, came from the narrated stories, reminiscences, and often shrewd observations of the people themselves. It deals with residential community, song and dance, arts and crafts, and the role of women.

As an essentially ethnographic commentary, the study does not examine the economic features or effects of tourism, except where fiscal factors are pertinent to the understanding or continuity of the Te Arawa experience of the tourist world.

year: 1981